‘Tae-beom’, a sanitation worker at Korea University, uses his outstanding appearance and virginity detection ability to act as the self-proclaimed ‘Korea University Virginity Killer’. Tae-beom, who boasts a 100% win rate as a virgin killer, meets 'Chae-yi', a boy from the physical education class who has a sharp taste, and tries to take his virginity away like always, but... "I don't know...! The wedding is all over!!!" What is this XX...? It wouldn't be unfair if I had tried to do something right, but I met a type of strong enemy I've never seen before!!! Will Tae-beom be able to find Chae-yi, who has gone into hiding and complete the task of becoming a virgin killer?