Jennifer has an over-evolved, hyperactive reproduction system, unsatisfied by all but the most intense intercourse, often resulting in the death of her partners and the birth of mutant babies. Batz has an overgrown, sentient penis, which he tries to tame using strong medication, obscure mechanical contraptions, and copious amounts of porn. When Jennifer meets Batz she becomes obsessed with him, convinced that he is the only man who can satisfy her. When they finally meet, they bond over their social and personal difficulties and lack of sexual fulfillment. However, they must somehow tame Batz' increasingly erratic penis before it can go on a murder spree.