Every day, Jiwoon confesses his love to Sejin, a fellow student at university. Despite Sejin always rejecting him and citing their different preferences, the two eventually become lovers after Jiwoon promises to always stay by Sejin's side. However, as they grow closer, Sejin begins revealing his sadistic tendencies to a surprised Jiwoon. Unknown to Sejin, Jiwoon's friend Inhyuk has long harbored feelings for him and becomes concerned for his safety. After uncovering Sejin's troubling past, Inhyuk begins a psychological battle with Sejin while also trying to remain close to Jiwoon.
