In a postapocalyptic future, a ruthless vehicular gang called the Highway Warriors is conquering the wasteland through murder and plunder. During a raid, they kidnap the sister of a road warrior named Trace. He brings hell down upon them.
A San Francisco cab driver finds himself in possession of a monkey that is carrying a formula for turning atomic waste into a plutonium bomb. He finds himself framed for a murder and chased all over town by people trying to get the formula.