On Christmas Eve, at a small bar, Nam is lost in thought, trying to understand why his relationship with Nhi fell apart. At the same time, Trang is rushing around, searching for a drunken man who mistakenly took her coat. Inside the coat lies a precious keepsake tied to her and her lover. Nam decides to help Trang retrieve it, and in the process, he gradually uncovers the true reason why Nhi left him.