Tom Weaver is about to return home after a day at work as a financial analyst. He descends into the large, multi-tiered parking garage of his corporate offices, but discovers that his car will not start. What's more, the exits are locked and the elevators are shut down. But he has little time to ponder over this turn of events, as a large truck and its ruthless driver follow him around the levels of the suffocating garage attempting to do away with him. As Tom runs and hides from this psychotic trucker, he ponders who could possibly be trying to kill him, and wonders whether there is any chance for him to escape.