Traveling from the backwoods to Los Angeles to visit his cousin, a writer discovers a world of sex, drugs, crime and violence revolving around a beautiful young woman and her mobster boyfriend.
A number of vicious murders occur in a small California town after a motorcycle-riding stranger arrives. The gruesome slayings look disturbingly like the work of a werewolf. Meanwhile, in another nearby town, police are hot on the trail of a killer they believe is a werewolf.