Medical examiner and virgin Han Yeonu's suspects that his corpse is the victim of a homosexual serial killing. He tries to inform Cha Dohyeon, the district attorney in charge of the case, but in the process almost becomes a victim himself. Dohyeon offers Yeonu to stay with him as the killer is on the loose. While together, the two start unleashing the lust they'd suppressed ever since their first encounter, as Dohyeon takes the lead and Yeonu finds comfort in his arms.