In the cutthroat world of corporate Seoul, overworked assistant Yoon Ji-soo's life is a constant, grinding struggle. But a chance encounter with Choi Seok-jin, the cold, powerful heir to the Choi Group, changes everything. He's been given a final ultimatum: find a wife or lose his inheritance. His solution? A six-month fake engagement with Ji-soo, complete with a lavish salary and a contract detailing their every move.
Ji-soo agrees, desperate to save her family from ruin. But as their public performance blurs with private moments, the line between business and pleasure becomes dangerously thin. A single kiss under the Christmas lights, a quiet confession in a snow-covered cabin, and a shocking twist from an unexpected source threaten to unravel their carefully constructed lie.
As the corporate game turns into a dangerous gamble for their hearts, will their fake engagement lead to a real Christmas miracle, or will the truth be the one thing that finally tears them apart?