Monster chasing bus through desert

An apocalyptic story set in the furthest reaches of our planet, in a stark desert landscape where humanity is broken, and most everyone is crazed fighting for the necessities of life. Within this world exist two rebels on the run who just might be able to restore order.

A group of strangers wake up in a tourist bus in the middle of a desert, without any memory of who they are or how they got there.

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.