Episode 1

A crime unit with the lowest arrest rate gets started on its first case with its new chief, Yubin.

Episode 2

The team investigates a murder disguised as a suicide and gets in a bind as another death occurs.

Episode 3

The team advances the investigation with information from the witness. Yubin identifies the suspect.

Episode 4

A fire breaks out at a fried chicken shop run by Joongryeok's acquaintance.

Episode 5

The team narrows down the arson suspects but hits a dead end. Yubin then proposes a shocking theory.

Episode 6

Following Yubin's lead, the team pivots their investigation and uncovers new information.

Episode 7

A six-year-old girl is kidnapped. Amid the kidnapper's threats, Yubin dismisses a prime suspect.

Episode 8

Another team takes over the case, but Yubin's team secretly continues probing, sparking a showdown.

Episode 9

Armed with Tansik's clue, the team sneaks into a restricted area and faces a perilous situation.

Episode 10

The team identifies a suspect but lacks proof. Meanwhile, time is running out for them.

Episode 11

A woman arrested for breaking in is a romance scam victim. The team set up a stakeout.

Episode 12

Yubin's team baits the suspect but finds out things are not as they seem.

Episode 13

The team takes on a cultural artifact theft case and investigates everyone with access to the house.

Episode 14

The suspect claims someone else stole the painting. The team goes undercover to catch the culprit.

Episode 15

Yubin's team uncovers a union of gangsters and forms the Dongbang Group to infiltrate it.

Episode 16

Yubin's team leads a double life and manages to meet the right-hand man of the MZ Union's boss.

Episode 17

A university student is found to have been murdered the same way Yubin's fiancée was.

Episode 18

Hyunwoo identifies the murderer. Meanwhile, Junghwan obtains CCTV evidence but falls in danger.

Episode 19

Joongryeok hunts down Junghwan's attacker, while Yubin discovers crucial evidence has vanished.

Episode 20

The team trusts Yubin's claim that the real murderer is still out there, and gathers evidence.