The movie follows two brothers trying to flee to California. The youngest brother Jimmy is thought to be suffering from a mental disorder ever since his twin sister died in a drowning accident in a river two years prior to when the movie takes places. Since the death of his twin sister, Jimmy does not like to interact with anyone. He spends most his time playing with blocks and boxes. Jimmy could always be found with a lunchbox that he does not let leave his side. After the death of the sister, Jimmy's whole family got torn apart. His parents separated and he now lives with his mom and step-dad. His brothers Cory and Nick live with their father.
Jimmy quit talking and only spoke the word California after the accident. When placed into a institution by his mother and step-father, Cory comes to his brothers rescue and breaks him out. They then run away together to California. Jimmy's mother and step-father hire a greedy and disgusting man named Puntnam, who is a runaway-child bounty hunter, to track down Jimmy. Puntnam competes with the boys fathers and older brother Nick to find the boys.