The First Responders

On his first day, Detective Jin Ho Gae works jointly with firefighters to resolve a kidnapping case. (Source: Disney+ Hotstar)

The first responders try to stop a suicide attempt, but the case turns out to be more complicated. (Source: Disney+ Hotstar)

Ho Gae's house is said to be haunted. He and Do Jin try to solve the mystery that lies in the ashes. (Source: Disney+ Hotstar)

A hit-and-run accident of a child happens. The driver gets arrested, but a shocking truth awaits. (Source: Disney+ Hotstar)

Ho Gae starts an undercover operation. He must stop a crisis that may result in mass casualties. (Source: Disney+ Hotstar)

An unidentified body gets found at the scene of a fire. An unlikely person is held as a suspect. (Source: Disney+ Hotstar)

Ho Gae identifies a new suspect, but the case becomes more of a mystery. Who is the murderer? (Source: Disney+ Hotstar)

Ho Gae gets help from Song Seol and Yun Hong to catch a criminal. He reinvestigates a murder case. (Source: Disney+ Hotstar)

Firefighters rush to save a teenage girl attempting suicide. Police find a body of a newborn baby. (Source: Disney+ Hotstar)

The first responders search for the father of the stillborn child. They then meet a strange patient. (Source: Disney+ Hotstar)

Ho Gae misses Hyun Seo by a second. He and Seol chase the kidnapper, but it is not that easy. (Source: Disney+ Hotstar)

A series of fire incidents occur. Do Jin suspects a chain arson and goes to see Ho Gae. (Source: Disney+ Hotstar)