He needs a wife. She needs a miracle.

In a high-stakes deal to save her family's business, passionate designer Han Sora agrees to a fake Christmas marriage with Kwon Jaehyun, a cold and ruthless CEO. The contract is simple, the rules are clear, and the most important one is unbreakable: no strings, no feelings.

But as they step into his glittering world of corporate power and family expectations, their perfect lie begins to unravel. The closer they get, the more their pretense is threatened by a jealous ex, a scheming cousin, and the undeniable magic of the holiday season.

They promised each other a business deal. They never imagined they'd be fighting to protect a love that started with nothing more than a ring, a contract, and a dangerous, beautiful lie.