It all begins when young Kevin Dillon (KIERAN CULKIN) and his mother (SHARON STONE) move next door to Maxwell Kane (ELDEN HENSON) and his grandparents (GENA ROWLANDS, HARRY DEAN STANTON). Thirteen-year-old Max is a giant boy in size 14 shoes who's slow in school, short on courage, and long on not fitting in. But then, he meets Kevin, a tiny Einstein in leg braces with more smarts, lip and nerve than any kid in town.

Both boys have been outcasts all their lives. To the local hoods, they're "Frankenstein and Igor." But united as one - with tiny Kevin perched atop the shoulders of giant Max - they form a single, courageous warrior: an imposing force with an iron will, a wild imagination, and the mightiest air of nobility since the reign of King Arthur. Together, this fearless combination that calls itself THE MIGHTY will set out on the ultimate quest: to right wrongs, slay dragons and rescue damsels in distress - in a kingdom as fierce and overflowing with dark forces as their own hometown.