Jesse's best friend is killed by a black truck and Jesse himself is injured in the accident. He can't ride a motorcycle again until a man named Norman Tuttle turns up and offers him a knee operation and a job as a test pilot for a top-secret government project, code named Street Hawk.

The Widow of an overthrown dictator employs an escaped prisoner for a hideous scheme. Jesse investigates after the prisoner leaves a stand-in at the jail.