Ghettoblaster immediately gets down to business with a frightening montage of urban gang violence. Richard Hatch plays Travis, a survivor of the ghetto who returns home to find that his "hood" is a hotbed of criminal activity (he didn't know this when he left?) Fortunately, Travis is more than a match for the punks who terrorize the local citizenry. He himself becomes a marked man when he falls in love with Gina (Diane Moser), the object of gang leader Jesus' (Del Zamora) affections. Before the film has run its course, Trask has become a one-man vigilante unit against the forces of evil, much to the dismay of ineffectual police officer and self-styled "champion of the people" Mike Henry (Richard Jaeckel).