Chongchan confronts the black demons on campus, homosexuals, and perverts. Each time, the presence of his girlfriend Da-hye, who embraces him, is a difficult task for him. After being classified as a political prisoner and returning to university, Dong-min, who serves as student council president, becomes friends with Chongchan after Chongchan helps him in the fight against an informant on campus. However, the demon's hand does not stop and rapes Chongchan's friend's girlfriend, driving her to suicide. Dong-min's girlfriend also goes mad from torture, and Dong-min himself commits suicide. Chongchan then embarks on revenge.