The powerful superhero John Hancock has become a joke because alcoholism and his clumsy. He also became the most hated man in Los Angeles. Although he has saved many lives, he also destroyed a lot of property, the city worth millions every time he comes into operation. When he saves the life of Ray Embrey PR professionals from an oncoming train, the executives are grateful and believe he can restore Hancock's image as a true superhero. He brings to the anti-hero for dinner and introduced his son Aaron, a big fan, and his wife, Mary. But for some reason does not want to mysterious Mary Hancock anywhere near him or his family.