Code ZERO

E1

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

Code TWO

E2

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

Code YELLOW

E3

Ho-gae's house is said to be haunted. He and Do-jin try to solve the mystery that lies in the ashes.

Code V30

E4

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

Code BLACK

E5

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

Code RED

E6

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

Code BLUE

E7

Ho-gae identifies a new suspect, while the case becomes evermore ensnared in mystery.

Code CLEAR

E8

Ho-gae reinvestigates a murder case and gets help from Song Seol and Yoon Hong.

Code PINK

E9

Firefighters rush to save a teenage girl attempting suicide. Police find a body of a newborn baby.

Code AMBER

E10

The first responders search for the father of the stillborn child. They then meet a strange patient.

Code ONE

E11

Ho-gae misses Hyun-seo by a second. He and Seol pursue the evasive kidnapper.

Code F63.1

E12

A series of fire incidents occur. Do-jin suspects a chain arson and goes to see Ho-gae.