On his first day, Detective Jin Hogae works jointly with firefighters to resolve a kidnapping case.

The first responders try to stop a suicide attempt, but the case turns out to be more complicated.

Hogae's house is said to be haunted. He and Dojin try to solve the mystery that lies in the ashes.

A driver is arrested after a hit-and-run accident of a child. A shocking truth awaits.

Hogae starts an undercover operation. He must stop a crisis that may result in mass casualties.

An unidentified body is found at the scene of a fire. An unlikely person is held as a suspect.