The lives of Do Chi Gwang, Kim Young Koon, and Han Tae Joo were destroyed by a tragic affair. They became members of an internal affairs investigation team for the police and they try to dig up the truth on who is behind the tragic affair.

Lee Da Il is a private investigator. Jung Yeo Wool becomes his assistant to solve a mystery related to her younger sibling's death. They work together to solve other mysterious crimes.

Man-Bok (Shim Eun-Kyung) is a high school student. She suffers from severe motion sickness and can't ride any vehicle as a result. As she can't tale the bus to school she has to walk for 2 ...

Saeyoung is a new employee who eventually stands against Leesun, her stubborn team leader. Leesun is upset by Saeyoung's behavior, but she soon learns about ominous stories about Saeyoung. ...

A girl is transferred to a mysterious boarding school, where she is forced to discover its secrets to survive.