Traveling businessman David Mann angers the driver of a rusty tanker while crossing the California desert. A simple trip turns deadly, as Mann struggles to stay on the road while the tanker plays cat and mouse with his life.

A truck-stop waitress, determined to make a better life for her young children after being abandoned by her husband, leaves hash-slinging behind her to embark on a new career as a trucker in the rig her late father used to drive.