A plastic-spoon man is on his way to becoming a legendary army cook—uncovering dark secrets within the base through his cooking skills.

In a remote mountain village of 15th-century Joseon, humble headman Heung-do hears a rumor that any village hosting an exiled nobleman will be blessed with abundance and fortune. Hoping to bring prosperity to his impoverished community, he eagerly submits a petition to host one—unaware that his guest is none other than the fallen monarch, deposed boy-king Danjong.

As a killing resembling a cold case resurfaces in a small town, the chase for the truth falls on two policemen who each harbor secrets of their own.