Baretta must use his wits to survive after he and a runaway girl he apprehended unwittingly get into a police car being driven by a couple of holdup men disguised as cops.

Baretta must find a nurse's 9-year-old sister, witness to the murder of a blind hot-dog vendor, before the killers do.

When his partner is charged with shooting a suspect in the back, Baretta tries to locate the only witness who can save the man's career, but the real murderers are after him too.