Naive teens, dressed in their Halloween best, find themselves in the throes of a heated orgy, hosted by a notorious swinger couple. The night begins innocently enough, but as inhibitions fall away with each sip of spiked punch, the group's desires rise. First-time explorers tentatively touch and taste, learning the ropes from more experienced partners. The room fills with moans and the scent of sex as friends become lovers, indulging in threesomes and more.