A group of high school friends have a tradition that they continue to honour even as adults: an annual Christmas gift exchange. Nam Yoontae is handsome, popular, easy-going, and the womaniser of the group. Nerdy, bespectacled Seong Chan, who only ended up with a gang of boys his polar opposite because they needed his help getting through exams, has been harbouring a secret crush for the other man since their schooldays.

Seong Chan dutifully attends the gift exchange every year for one reason, and one reason only: to have Yoontae receive his gift. But this Christmas, it seems that something even more shocking it about to happen.