该作根据畅销小说改编,以位于东京新宿歌舞伎町的都立高中为舞台。龙星凉此次饰演的是不知道“水商”是风俗行业,而在该学校担任社会科的教师,却被学生们卷入了各种纠纷……通过不为人知的风俗业展现浓浓人情味是本剧的一大看点。Based on the life of Sa Myeong-dang who was born Yu-jeong in the early Chosun Dynasty and was the child prodigy. He passed the state examination on Buddhism at an early age. He studied both Buddhism and martial arts and aided in repulsing the Japanese invasion of 1592.