After causing trouble, Dong-ju is demoted to the Insung Metropolitan Police Agency, where he's treated like dead weight and his fellow world-class medalists also face discrimination and scorn. But when a major case erupts, it reignites the fire in their hearts.

At Man-sik's suggestion, a special criminal investigation team is formed with the former world-class medalists. Ready for a fresh start, each member joins with their own hopes and goals, but behind the creation of this special team lurks a hidden agenda.

Using Han-na's surprise kiss as an excuse, Dong-ju heads out alone with her on an investigation and discovers Ju-yeong's burner phone. Jong-hyeon finds himself growing uneasy as Dong-ju and Han-na get closer. Meanwhile, Drugmon, under surveillance in an apartment, begins plotting her escape.

Convinced that Ju-yeong is the hit-and-run driver, Dong-ju scrambles to find evidence. Meanwhile, Jong-hyeon heads to the Prosecutors' Office at Man-sik's request to investigate Gyeong-il's case, and Ju-yeong meets someone in the shadows.

While investigating Ju-yeong, the Special Criminal Investigation Team is forced to hand him over to the prosecution after their sudden intervention. Dong-ju is hospitalized for tests following his car accident, and the team digs deeper into Ju-yeong's true identity and his connections to the prosecution.

The Special Criminal Investigation Team is now complete with Han-na's return and Jong-hyeon joining. They launch a full-scale investigation into Gyeong-il's death and Min Ju-yeong. As they split into teams and close in on their targets, Han-na receives her father's case files.

The Special Criminal Investigation Team is disbanded in the end. Dong-ju quietly prepares revenge against Ju-yeong alone, but his reckless move only invites a greater crisis. Catching on to his plan, Ju-yeong launches a counterstrike.

Han-na is kidnapped, and Dong-ju and Jong-hyeon rush to rescue her, only to find themselves trapped in a deadly crisis. Just when it seems there's no way out, an unexpected gunshot rings out. With an unforeseen sacrifice shaking the team, will they survive?

Dong-ju's assault puts the Special Criminal Investigation Team in a major crisis. Man-sik fights to keep the team together, while the others continue investigating Ju-yeong, weighed down by uncertainty. Meanwhile, Ju-yeong leaves the hospital and heads to an unknown destination.

The Special Criminal Investigation Team catches wind of Ju-yeong's drug smuggling and infiltrates the customs office disguised as a quarantine unit. Following a lead left by Drugmon, they manage to find the container hiding the drugs but walk straight into a trap set by Ju-yeong.