Baltimore, Maryland. Sylvia sees a girl being attacked from her lover Terry's bedroom window. The assailant flees and his victim is saved. But that same night another girl is found murdered.

Wimpy young executive Michael is about to get pulverized by a jealous boyfriend in a bar when a handsome, mysterious stranger steps in—and then disappears. Later that night, Michael runs into a stranger on a pier, who wheedles his way into Michael's life and turns it upside down.