A young girl named Clarissa (Kalyssa Noelle) finds a magical wrench while running along the beach. This wrench transports her to the world of the Mechanics (Lee Majors, Bob Boudreaux), masters of a mystical garage which holds the power to turn humans into machines.
The Mechanics help Clarissa and other confused mortals, such as Zoe (Chachi Gonzales) and Jon (Shawn Welling) to confront their most terrible fears and unlock their deepest hidden potential.
The Mechanics have found that humans are trapped by their deepest, primordial fears: fears such as drowning, predation, and defenselessness. They give humans the chance to wear the best armour, and the humans become better for it.
Zoe overcomes her fears of mortality in the sheltering speed and power of a sports car body. Jon overcomes a fear of commitment when a beautiful, redheaded Porsche tempts him away from his true love. Clarissa overcomes her fear of the ocean in the spirited, free innocence of a yellow VolksWagen Beetle.
In the end, Clarissa finally walks straight into the ocean, free at last of the fear that has haunted her throughout her young life.