Powerful superhero John Hancock saved many lives over the years, but along the way cost the city of Los Angeles millions of dollars in property destruction. Today, the clumsy alcoholic is a joke and the most hated man in the city. Fortunes turn when he saves the life of Ray Embrey, a PR executive from an oncoming train. Thankful, Embrey believes he can restore Hancock’s image as a true superhero. He brings the anti-hero home for dinner and introduces him to his son Aaron, a big fan, and to his wife, Mary. For some mysterious reason however, Mary doesn’t want Hancock anywhere near her or her family.