Speed Racer (Hirsch), a skilled young car driver who belongs to a family of gearheads, is blackmailed by the head of the nefarious corporation Royalton Industries to participate in The Crucible -- the annual cross-country rally that claimed his brother's life years ago. Behind the wheel of the Mach 5, his father's greatest invention, Speed goes head-to-head with his chief rival, the mysterious-yet-familiar Racer X (Fox).

Joy (Diaz) and Jack (Kutcher) meet while on a Las Vegas bender, where their drunken nuptials are only part of a larger problem: What to do when Jack wins $3 million with Joy's quarter, and they are forced to spend six months as wife and husband if they are to see a penny of their winnings.

A band of criminals find refuge in a secluded country inn, fully unaware of the nightmare that will greet them this evening.

In a hospital on the outskirts of 1920s Los Angeles, an injured stuntman (Pace) begins to tell a fellow patient, a little girl with a broken arm (Untaru), a fantastical story about 5 mythical heroes. Thanks to his fractured state of mind and her vivid imagination, the line between fiction and reality starts to blur as the tale advances.