The Police Station Next to the Fire Station and the National Forensic Service

The first responders and the NFS cooperate to uncover clues to the serial arsonist.

The arsonist's final plan gets revealed. Can Ho-gae save everyone from danger and catch the criminal?

When a murder occurs at Myeong-pil's villa, Ho-gae leaves his post and joins the case. Kang Do-ha joins the National Forensic Service.

Do-ha concludes that the death at the villa was an accident, but Ho-gae continues his investigation. Do-ha uncovers the dark side of the neighbours.

An unidentified body is found after a brawl at a junkyard. A crisis arises during the autopsy.

Criminals plan to endanger the NFS building. Can the team safeguard the place?

The police and fire department respond to an urgent call about a horrifying incident regarding organ extractions.

Ho-gae delves into the investigation of Ma Joong-do's murder and reopens a past murder case and prison escape.

Ho-gae vanishes after a caravan explosion. Amidst the chaos, a showdown is drawing near.

Supported by the NFS, the first responders confront the sinister mastermind in a decisive showdown.