Synopsis
Things are turned upside down in the search for "M" when an anonymous confession is published on Seoyeon University's student forum. Coming from different departments of the university, the four students - Ma Joo-ah (Park Hye-su), Cha Min-ho (Jeong Jae-hyun), Seo Ji-min (Roh Jeong-eui), and Park Ha-neul (Bae Hyun-sung) are in search for “M”. They go through university-life, changing friendships, and realistic budding romances in the course of their search.
