Kang Seong Jae is a soldier and gets transferred to the Gangrim Post, where First Sergeant Park Jae Yeong, First Lieutenant Cho Ye Rin and military cook Yun Dong Hyeon are stationed.

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.

A king makes a request to Joseon's best dating agency "Flower Crew" to protect his first love. Upon his request, the matchmakers at the agency risk their own lives to transform the lowly woman Gae Ddong into the most noble woman.