Moon Bokja is a musuri, the low-level maid in charge of odd chores such as drawing and delivering water for palace bath. One night, her carelessness in front of King of Joseon led her to the miserable fate of a palace maid who had to live in a deserted pavilion without a single visitor and would later be forgotten. In the new life as Concubine Bokja, will His Majesty the King look for her again?