11:40 AM - During 4th period when all the students are in gym class, top student Jeong Hun walks into a classroom to find fellow classmate Tae Gyu brutally murdered. Jeong Hun and Tae Gyu have had a history of disliking one another.
11:50 AM - Da Jeong walks into the same classroom and discovers Jeong Hun with blood covering his clothes standing near the murdered body. Da Jeong is a mystery
