When Seo-yoon, a struggling baker, needs a miracle to save her family's failing business, she never expects it to come in the form of Lee Min-jun, a cold and ruthless CEO. He offers a simple contract: pose as his fiancée for the annual Holiday Festival Couple Contest and, in return, he'll save her bakery.

But as they navigate a world of cutthroat rivals, manipulative family members, and public scrutiny, their fake romance starts to feel dangerously real. As they face a series of challenges designed to test their "love," Seo-yoon finds herself falling for the man behind the CEO mask, and Min-jun discovers that the woman he hired is the only person who can see him for who he truly is.

With their enemies closing in and the lines between their contract and their hearts blurring, they must decide if their fake romance is a game to be won, or a love story worth fighting for.