 A young couple at an underground rave encounters a man offering drugs and some interesting experiences. When the couple s nude bodies are then found posed as Adam and Eve in the local arboretum, the Millennium Group is called in. Working with fellow group member Maureen and a skeptical local detective, Frank pieces together the reasons behind the killer s behavior based on what he does to his victims. In the end, however, chemical analysis of the drugs found in the victims  bodies produces the concrete results that point to the killer.