Chanyeol is a christmas elf who tries his best to enforce and abide by the rules set by Santa, but when he falls in love with Baekhyun, someone who has been on the naughty list since he was young, Chanyeol finds himself in a difficult situation that questions his loyalty to the rules. With the help of Santa, will Chanyeol be able to transform Baekhyun's way of life and make him a new reisident of the nice list?