The exploits of Dusty, a Los Angeles cabbie who longs to be a private detective. The pilot episode establishes how Dusty becomes the apprentice of world renown private investigator investigator Tim Halloran. Halloran uses Dusty's cab to follow a suspect and Dusty latches onto him, aids him, and soon becomes his assistant. In their first case together, Dusty and Halloran become involved with a kidnapped girl and missing drugs sought by mobsters.