Asian Drama

During fourth period, high schooler Da-jeong finds his classmate Tae-gyu dead in a classroom and Jeong-hun standing in front of him with blood on his clothes. In order to stop Jeong-hun from becoming the prime suspect, Da-jeong must help him find the real murderer, who is still inside the school building, under 40 minutes before period four ends.

Inspired by Shakespeare's classic of the same name. Yeon-su is a beautiful but naughty young woman whose family became millionaires overnight. All men fall in love with her at first sight, but Jeong-do, the only son of a respected family, has no regard for her. Yet despite this, the two fall in love and get married. However, their conflicting families shake up their wedded bliss.

11:40 AM - During 4th period when all the students are in gym class, top student Jung-Hoon (Yoo Seung-Ho) walks into a classroom to find fellow classmate Tae-Gyu (Jo Sang-Keun) brutally murdered. Jung-Hoon and Tae-Gyu has had a history of disliking one another.

11:50 AM - Da-Jung (Kang So-Ra) walks into the same classroom and discovers Jung-Hoon with blood covering his clothes standing near the murdered body. Da-Jung is a mystery buff herself and loves to use her deductive reasoning. She realizes that Jung-Hoon is the prime suspect, but doesn't believe that he killed Tae-Gyu. There's only 40 minutes before next period, in which all the students will come into the classroom and also discover the dead body.

12:05 PM - Jung-Hoon and Da-Jung frantically search for the real killer before the next period starts. With Da-Jung using her deductive reasonings they get closer to finding the identity of the true killer. Jung-Hoon's best friend Do-Il (Kim Dong-Beom) then takes part in finding the killer. When the 40 minutes are almost up, they discover a shocking new fact to the case...