Ahn Ji-won has spent years hiding from the world, working quietly in a Seoul café while saving to open her own design studio. But when Lee Jin-woo, the stormy heir to a powerful conglomerate, bursts into her life with a shocking proposal—a fake marriage to avoid a strategic corporate wedding—her carefully ordered life begins to unravel. The contract promises one hundred million won, three months in his penthouse, and a convincing holiday romance for the public.
But as snow blankets the city and Christmas draws near, their cold arrangement thaws into something dangerous: real attraction. Between his family's ruthless games, a bitter ex-fiancée, and the ghosts of their pasts, Ji-won and Jin-woo must navigate a world where every glance is scrutinized and every touch could be a lie... or the beginning of the truth. This holiday, love might just be the most binding contract of all.