Doa Han is secretly dating Seong-u Yu, the most popular guy on campus. To the outside world, they’re just acquaintances, but behind closed doors, they’re in a relationship. However, the illusion of a perfect romance is shattered when Doa suspects Seong-u is harboring a dark secret. Enter Eunho Yeon. He’s a mysterious student who seems to know something about Seong-u. As Doa becomes increasingly entangled with Eunho, her unofficial relationship is pushed to the absolute brink. On a campus fueled by twisted desires and shifting loyalties, how far will Doa go to uncover the truth?