In the heart of Seoul, a quiet caf owner named Eun-joo finds her simple life upended by a cold, mysterious customer: Kwon Min-joon, a chaebol heir with a dark secret. He offers to save her struggling business, but his generosity is a disguise for a far more complex and dangerous plan.
As their lives intertwine, Eun-joo discovers a shocking truth-Min-joon's desperate mission for justice is tied to her family, and to the tragic death of her twin sister, a secret her parents kept hidden. Caught in a high-stakes war between a powerful family and a man seeking vengeance, Eun-joo must choose between a truth that could destroy them both and a love story forged in the ashes of a Christmas tragedy.