After twelve years in prison, Walter returns home. His family has abandoned him, save for his brother-in-law. Few know he's a sex offender and pedophile. Walter finds an apartment and is regularly visited by his parole officer. He gets a job at a lumber mill and starts seeing a coworker. Then his new world begins to unravel; as his past becomes known, he strikes up a high-risk friendship with a young girl and realizes that a man loitering near a schoolyard is a child molester prowling for his next victim.

A high school bus on its way to a retreat blows a tire and stops at the nearest ranch for help. The driver, five troubled students, and their ridiculous gym- teacher chaperone find, instead, criminals who will stop at nothing to make sure their drug operations aren't discovered. The students and teacher are easy prey for these animals, but standing in the way of certain death is a force more determined and more skilled than any of them ever expected: The Bus Driver.