Prince Yi San (Lee Junho) vows to become a benevolent monarch despite his cruel grandfather's reign. He falls for Sung Deok Im (Lee Se Young), an intelligent and spirited palace maid. Yi San aims to make her his concubine but Deok Im knows becoming a royal consort would restrict her freedom and rob her of joy. Undeterred by Deok Im’s misgivings, Yi San’s pure love slowly wins her over. Will their hard-earned love be able to withstand the turmoils of palace life? Based on the novel of the same name by Kang Mi Kang, this 2021 South Korean historical series was directed by Jung Ji In and Song Yeon Hwa.