Mymy no longer believes in Christmas.

Mymy is a brilliant student living in the golden comfort of the Walper family with her brother and two sisters. While she leads a peaceful life, she dreams of becoming a world-famous TV host. Beneath her "perfect girl" image lies a deep boredom with her quiet reality. Tonight, she deliberately stayed awake to confront the myth of Santa. She’s not looking for magic; she’s looking for a thrill, ready to trade her "Nice List" status for the role of a lifetime.