In a city of cold skyscrapers and colder hearts, Lee Ji-eun is about to make the ultimate sacrifice. To save her family from financial ruin, she signs a contract with the devil himself, Kim Soo-ho. He's the CEO who destroyed her family, the man who now owns her—not as a wife, but as a public relations pawn.

The contract is clear: one year of a fake marriage, a public charade of perfect love, with a man who sees her as nothing more than a business asset. There's no room for emotion, no space for real connection, and certainly no Christmas love in the contract.

But as the days turn into weeks, and the fake smiles begin to feel a little too real, Ji-eun starts to see a crack in the fortress that is Kim Soo-ho. And when his enemies come to destroy him, they find not a man alone, but a love that was forged in fire, a love that was never in the contract but that might just be their only hope for a happily ever after.