The new English teacher Han Gi Tak who just want an easy career, starts to teach in Byeoli Island, an uncontrollable middle school students together with Jeong Seok who is a veteran Math teacher of 3 years. The students, Heo Nara who dream to be an intelligent agent in the future, Sin Bongsun who dream to become a beauty Youtuber, Na Joong Hee who is extremely typical middle school 2nd grade student,
