Three research students Stephanie, Christy and Jeff study ancient artifacts in an archaeological lab. Working hard, they forget about the time and stay locked in the lab for the night. With no way to leave, the students become bored... When Jeff finds erotic videos of other students spending more time having sex than working, the trio begin to entertain themselves with each other's sexual explorations.

Annie has persistent sexual daydreams and blackouts at work during her brief lunch break, and her roommate Erin decides to get her involved with real-life sex to cure her of this malady.

When a bachelorette party at Emmanuelle's house is interrupted by a mysterious loner, strange things begin to happen. The party guests start changing one by one into blood-sucking sexual predators with only Emmanuelle to tame the situation. Will she save her friends or will she fall under the spell of the Prince of Darkness?