Graduate students Garib and Jinjoo, both of whom specialize in insect studies, have been in a long-term relationship since they were freshmen. After living together for over three years, the couple has grown restless. One day, Jinjoo stings his finger on an unknown insect named Libidine, which he fears may cause Garib to leave him. However, this mysterious insect unexpectedly arouses Jinjoo and catches Garib's attention. Meanwhile, their advisor, Coral, and assistant, Bada, also discover the creature's potential to increase sexual desire. Driven by curiosity and desire, they devise a plan to explore Libidine's erotic powers on one another.
