The drama will tell the story of the search for the mysterious ‘M’ on the university campus, who posted something on Seoyeon University’s website. The post turns the university upside down. The series will follow the evolving relationships and love stories of the various characters as this search unfolds. Ma Joo Ah is a second-year student on the Business Administration degree programme at Seoyeon University. She has a warm heart and a bright personality. She is not interested in pursuing a dream or being in a romantic relationship. Cha Min Ho is a second-year student in the School of Computer Science at Seoyeon University. He is talented and has innovative ideas for app development. He has been friends with Ma Joo Ah for 12 years. Seo Ji Min is a student in the Department of Economics at Seoyeon University. She is also a member of the university’s cheerleading squad. Park Ha Neul is a student in the Faculty of Business Administration at Seoyeon University and is the university’s honorary ambassador.