"Supers", humans gifted with superpowers, were once seen as heroes, but collateral damage and injuries from their various good deeds led the government to quietly create and initiate a Supers Relocation Program, forcing the Supers to fit in among the civilians and not use their superpowers in exchange for anonymity.
15 years later, Bob and Helen are supers and formerly known to the world as Mr. Incredible and Elastigirl. Mr. Incredible has super strength and Elastigirl is able to stretch such a long distance to reach places nobody else could. Mr. Incredible and Elastigirl get married and raised three children, Violet, Dash, and Jack-Jack, in the suburbs of Metroville. Since Mr. Incredible and Elastigirl have superpowers, Violet and Dash also have innate superpowers; Violet being able to create force fields and turn invisible, and Dash able to run at a very fast speed, but the baby Jack-Jack has not yet to show any. Bob, stuck in a white-collar job at an insurance agency, berated unfairly daily by his boss Mr. Huph, reminisces of his former days as Mr. Incredible, and sneaks out on Wednesday nights with his Superfriend, Lucius Best, aka Frozone (having the ability to freeze the moisture in the air), to fight street crime.
One day, Bob loses his temper with Mr. Huph, who refuses to let him foil a mugging, and hurls him through five walls and into a locker, exposing his super strength and losing his job as a result. Returning home whilst trying to figure out what to tell Helen, he finds a message from a woman named Mirage, who asks for Mr. Incredible's help to stop a rogue robot on a distant island for an incredible reward. Bob, claiming that he is going on a business trip to Helen, takes up Mirage's offer, and travels to the island of Nomanisan in a jet with Mirage. She explains to him that the robot is called an Omnidroid, a top-secret prototype battle robot, able to solve any problem it is confronted with. The only unfortunate problem was its intelligence reached a point where it wondered why it was taking orders, and now it is wreaking havoc in the dense jungle.
Mr. Incredible is then airdropped into Nomanisan, explores around and then encounters the Omnidroid. After a fight, Bob emerges victorious by tricking it into ripping out its own power source. On his return to Metroville, Bob spends his days working out, improving his family relationships with Helen and the kids, and getting back into shape. He takes his super suit, torn in the battle with Omnidroid, to Edna Mode, the fashion designer to the Supers, and asks her to repair it. She does so, and also insists on creating a new, better super suit for him. She refuses his request to add a cape, though, highlighting how the accessory doomed several other Supers in the past by getting caught on a variety of things, such as the fin of a missile and a vortex.
Mirage soon contacts Bob with another job on the island. On arriving, he finds an upgraded Omnidroid who starts to attack him. While trapped by the robot, he meets its creator, the technology-savvy supervillain Syndrome. Bob recognizes him as a young fan, Buddy Pine, an enthusiastic and eccentric young inventor who wanted to be Mr. Incredible's sidekick 15 years prior to the present day, but Mr. Incredible embarrassed him when sending him back to his home. Syndrome vowed revenge for this shunning, and as he brags about how he has won, Mr. Incredible throws a log at him. Syndrome dodges the log and immobilizes Mr. Incredible with his zero-point energy ray. After throwing using the zero-point energy ray to throw Mr. Incredible around in order to show his power over the superhero, Syndrome accidentally throws him over a waterfall and into a river. Syndrome sends a bomb to kill Mr. Incredible and sends a probe to ensure that Mr. Incredible has been killed.
Mr. Incredible manages to avoid the explosion and, discovering the bones of former Super and friend Gazerbeam, fake his death by hiding from the probe behind them. In the process, he discovers that Gazerbeam used his powers to inscribe a dying message into the cave wall: "KRONOS". Determined to discover Syndrome's plans, Mr. Incredible breaks back into his facilities, finds a computer, and, using "Kronos" as the password, discovers a plan to systematically eliminate Supers. Each super thus far was pitted against increasingly advanced models of Omnidroid, and if not terminated by one model, they would be terminated by the next or by Syndrome himself. He also discovers that, although Lucius/Frozone's location is known, Helen's is not. As he browses the database further, he discovers that Operation Kronos's final stage is to unleash an Omnidroid on Metroville via rocket deployment.
Meanwhile, Helen has become suspicious of Bob having an affair. After discovering Bob's repaired suit, she talks to Edna and learns she created suits for the entire Parr family, each outfitted with a tracking device. Helen triggers Bob's, identifying the remote island but inadvertently revealing Bob's presence to Syndrome and causing him to be captured. Helen borrows a private jet from an old friend and travels to the island, disappointed to learn that Violet and Dash have stowed away while leaving Jack-Jack at home with a babysitter. As they near the island, Syndrome gives an order to terminate them by hitting the plane with missiles. Elastigirl uses her superpower to save her children from the exploding jet, and they safely make it ashore.
Elastigirl, Violet, and Dash take shelter during that night in a cave, and Elastigirl (after giving them masks to protect their identity and making them promise to use their powers if threatened), runs off to Syndrome's lair. She sneaks in and, after creeping around (one point being that she found a massive rocket), rescues Mr. Incredible from his cell. Violet and Dash, meanwhile, then find out that the cave they are in is, in fact, an exhaust tunnel for the rocket launch and have to spend the night in the jungle.
The next morning they encounter a talking bird, which is, in fact, a robotic alarm, this attracts the attention of the guards, and they pursue them on high-speed Velocipods. Violet and Dash manage to defeat all of them (combining Violet's powerful force field with Dash's super-speed), and they soon reunite with Mr. Incredible and Elastigirl. The family works together to face off against and defeat several guards chasing Dash and Violet. They are soon captured by Syndrome, who immobilizes Mr. Incredible and Elastigirl with one zero-point energy ray and simultaneously immobilizes Violet and Dash with another. Syndrome sees that the family is wearing matching super suits and is then surprised to find that Mr. Incredible married Elastigirl and had kids with her, remarking that he had hit the jackpot by capturing a whole family of Supers.
Upon imprisoning the whole family in his containment unit in order to keep them from interfering with his plan, Syndrome explains that he has launched the perfected Omnidroid to Metroville, which has sent the city into chaos, upon which he will appear and using a control band, "subdue" the robot and become the city's hero. Then once Syndrome has become an old retiree, he plans to sell his advanced inventions to everybody, making them Super and thereby making the term obsolete. He departs in his aircraft to stop the Omnidroid. After his departure, Violet discovers that her force field can sever her magnetic bonds and frees the rest of the family, and with Mirage's help, they board a second rocket bound for the city.
In Metroville, the Omnidroid has started a path of destruction, and Syndrome enacts his plan, first saving a woman and her baby from a petrol tanker tossed by the Omnidroid, then faking a punch while pressing a button to detach one of the robot's arms, much to the people's cheers. However, the Omnidroid is still a learning robot: it identifies where the external control source is, observes the control band and fires it off Syndrome's arm, then shoots at Syndrome's in-built rocket boosters, sending the villain flying into a building and knocking him unconscious while the robot continues to wreck the city.
The Incredibles and Frozone, who start seeing the ensuing attack, work together to destroy it: the robot attempts to flatten Violet and Dash, but Mr. Incredible just manages to save them, though he is thrown into a building afterward. He then charges back and tackles the Omnidroid, with Frozone helping as well. He then finds Syndrome's wristband, realizing that it controls the robot, and (after being clawed in by the robot but being released upon pressing a random button) throws it to Dash, who races to get it with the Omnidroid firing at him and trapping him amongst burning cars. Elastigirl slingshots a manhole cover and destroys the laser, while Frozone rescues Dash. The robot then vaults itself into the air and nearly crushes Frozone and Dash, but he manages to freeze the air around them and cushions their fall. The remote is then knocked away; Mr. Incredible runs to get it, only to be trapped in the Omnidroid's fired pincer. Violet then recovers it while invisible, and after much confusion, Mr. Incredible soon realizes from remembering his battle with the first robot that the only thing that can penetrate it is itself. He directs Elastigirl to use the right controls and releases the powered-up pincer, which surges through and comes out of the Omnidroid with its power source. It falls mundanely into the river and explodes, which causes the city to welcome the Incredibles and Frozone as heroes. As they are driven back to their home, Elastigirl anxiously calls the babysitter and learns that Syndrome, having regained consciousness, has abducted Jack-Jack.
Arriving at home, Syndrome immobilizes the Incredibles with his zero-point energy ray, explaining that he plans on kidnapping Jack-Jack and raising him as his sidekick so that Jack-Jack can fight the Incredibles someday. As Mr. Incredible and Elastigirl launch a rescue attempt, Jack-Jack reveals his powers of transformation, forcing Syndrome to drop him into Elastigirl's waiting arms. Bob hurls his sports car at Syndrome, causing him to fall in the aircraft turbine, where his cape gets caught in the engine, killing him. The ruined plane crashes into the Parrs' home, but Violet is able to protect the family from harm. Three months later, the Parrs have re-adjusted to normal life, but when a new villain, the Underminer, appears, the Incredibles, including Jack-Jack, don their masks, ready to battle the new foe.
Picking up from where the first film left off on, the Parr family confronts the Underminer as he makes his way towards City Hall while also grounding buildings and robbing the city bank. While the villain managed to get away, the Incredibles manage to stop the drill just on time with the help of Frozone. But they are then arrested for intervening in such an incident and for destruction of property. Rick Dicker of the "Super Relocation" program tells the couple that he is being shut down due to this event and that the Parrs will be left on their own but wishes them the best of luck.
Lucius meets up with Bob and Helen to inform them that they are being contracted by Winston Deavor of DevTech. When they arrive to meet him, they are greeted by Winston and his sister Evelyn. Winston proposes a plan to help give back the superheroes public support by setting up missions and publicity stunts to better their reputation. He enlists Elastigirl due to being the least destructive out of the three to which she agrees. Winston offers the Parrs a new home as a sign of appreciation and giving Elastigirl a new suit and new bike, leaving Mr. Incredible and the kids; Jack-Jack, Violet, and Dash, on her first mission.
Flying out to New Urbem, Elastigirl stops a newly built monorail train from crashing after it unexpectedly goes backwards at high speeds. She discovers that the train driver was under the influence of the Screenslaver, a villain who hypnotizes people through any monitor he hacks into. During an interview she encounters the villain again by exposing his plans to kill the Ambassador by hijacking the escort helicopter she's on but Elastigirl quickly comes to her rescue.
Elastigirl's recent actions have caused a movement of superheroes stepping out into the public, wanting to help out others like they did in the past. These include the likes of Voyd, He-Lectrix, Reflux, Screech, Krushauer, and Brick. She manages to figure out the Screenslaver's location by pinpointing the signal where he broadcasts from another TV interview. Elastigirl arrives at the scene with the Screenslaver attempting to escape but manages to capture the villain, although the suspect claims to only sell pizzas.
Meanwhile, Bob struggles to take care of the kids. Violet becomes very distraught when her crush Tony Rydinger does not remember her as Dicker wiped out his memories after he found out she was a superhero. Dash struggles with regular school work which leaves Bob frustrated as well. And after fighting a raccoon, Jack-Jack's multitude of powers start to show even more with Bob not able to figure out how they work. But he eventually manages his job as a parent, going the extra mile to help his two eldest kids and by having Edna Mode babysit Jack-Jack, who ends up giving Bob a way to control the baby's powers.
Meanwhile, a victory party at Devtech is held to celebrate Elastigirl's capture of the Screenslaver and the global legalization of Supers with Winston Deavor announcing the televised signing of the International Supers Accord by the ambassadors of the United Nations to be held at the EverJust ship the following morning. Elastigirl then investigated deeper into the identity of the Screenslaver as she ended up in Evelyn's control room as she noticed something strange in one of the monitors. It turned out that one of the Screenslaver's monitors during the fight earlier was connected to her suitcam. As Elastigirl delved deeper into truth, Evelyn enters and played along until she slipped a pair of Hypno-goggles on Elastgirl's eyes before she could alert anyone, rendering her unconscious.
Back at Bob's side, he was given a controller by Edna to manage Jack-Jack's powers and take him back after the night. Bob and his kids marvel at Jack-Jack's powers at home while testing the device, learning that they can also track his location.
Few hours before the historic moment, Elastigirl wakes up, being tied up to a chair in the freezer room of the EverJust, unable to move due to the weakness of her powers as Evelyn, who revealed herself to be the Screenslaver, pointed out. Evelyn also revealed that she hated superheroes due to her father's death and did not see eye to eye with her brother Winston ever since. She also plans to use supers to cause mayhem in a way to permanently outlaw them while harming thousands of innocent lives. She then led the hypnotized Elastigirl to the conference room as bait to lure Mr. Incredible to his doom.
Evelyn then sent a fake distress call to Bob, who passed the message to Lucius. With Mr. Incredible kept busy, Evelyn sent the mind-controlled supers to keep the Parr children in control. Frozone arrives at the house just as they came and defended the three children giving Dash enough time to summon the Incredibile using the remote. As they were losing ground, the car arrived in the nick of time. Frozone sets the car to voice recognition mode before being captured. Violet, Dash, and Jack-Jack managed to escape and proceed to go after the EverJust instead of hiding at Edna's house.
Upon arriving in the Everjust, Mr. Incredible is led to the conference room only to be subdued by the hypnotized Elastigirl, thus allowing Evelyn to gain control of Mr. Incredible. With him and Frozone subdued and the children remaining at large, Evelyn led the mind-controlled Wannabes to guard the ship heavily. The Parr children managed to arrive and enter the ship undetected via seat ejection. Violet then tasks herself to find Bob and Helen, and Dash to look after Jack-Jack. However, Jack-Jack wandered himself off due to his powers which alerted the Wannabes to attack them, in which the children narrowly escaped.
Evelyn's plan went into full force the moment the International Supers Accord was officially signed. The mind-controlled Helen, Bob, and Lucius recite a vindictive manifesto on air to paint themselves – and Supers in general – as a public threat before they are freed from Evelyn's control by the children when Jack-Jack inadvertently frees Helen and displays other powers. After Evelyn tries to leave with Winston and discovers her plan, Winston frees the other guests on the ship from Evelyn's hypnosis by destroying the giant screen projecting hypnotic images. A battle ensues between the Supers, threatening to crash the ship into New Urbrem; all the mind-controlled Supers are freed from their hypnosis after the Parrs and Lucius destroy their goggles. However, Bob, Lucius, and the kids manage to bring the ship to a stop before it can cause significant damage. Evelyn escapes in a getaway jet attached to the ship but is eventually stopped and captured by Helen. Following the incident, Evelyn is arrested; she indicates gratitude towards Helen for saving her from falling to her death for the plane but still dislikes supers. Winston apologizes to Helen for being ignorant of Evelyn's plan, and Supers worldwide regain full legal status.
After the Deavor affair, Tony Rydinger, a boy at school who Violet had a crush on, agrees to a date with her at a movie. He leaves for the theater with the Parrs and Jack-Jack. However, at the theater, the Parrs witness a car of bank robbers armed with machine guns driving down the street. They leave Tony at the theater as Violet promises to be back in time for the movie. The Parrs don their masks, ready to pursue the criminals and to start a new adventure together.
The verse contains a bunch of superheroes with superhuman strength and speed, along with geniuses capable of making machines that can surpass them. They also possess abilities such as Elasticity, Ice Manipulation, Fire Manipulation and Forcefield Creation to name a few.
