Bob Parr was once one of the greatest superheroes on the planet. Everyone knew "Mr. Indestructible", the hero who saved lives and fought evil every day. Forced to hang up their super-costumes fifteen years earlier, Bob and his wife Hélène, the ex-Elastigirl, have taken on a new identity and are striving to lead a normal life with their three children, Violette, Flèche and Jack-Jack. in an anonymous suburb. Until the day Bob receives a mysterious message for a top secret mission: to save the world ... Mr. Incredible will finally be able to resume service, but this unexpected proposal hides a plot organized by a super-villain ...