Hyukjae writes a silly letter to Santa asking for a date to his company's Christmas party. He didn't think his jerk friends would find it and make fun of him for it. Nor did he think they would actually put it in the Santa mail drop.  Nor did he expect to wake up a few days later to a man in his apartment — a man who calls himself Donghae the Elf.

All Baekhyun and Sehun want to do is stay in their bed to cuddle and watch movies, but plans change when their best friend/roommate Jongdae decides to buy a tree and decorate it.