Lilly and Mitch go on a camping trip with their friend Joe who secretly wants the teasing buxom Lilly. Hearing the married couple practicing Kama-sutra in their motel room is too much for Joe. He asks the motel clerk about any local activities but she only has one in mind. The following morning, Lilly cheers up the depressed Joe by making out with him in his bed, until Mitch nonchalantly asks them to head out. The group then picks up a female hitchhiker to the camp site. The hitchhiker meets two female friends for a joint session. The following day, Mitch meets the hitchhiker in the woods and they get it on without a single word. Meanwhile, a dangerous biker gang is coming, to be continued in the sequel.