
While investigating a serial murder case, Detective Han Tae Joo gets into a catastrophic incident. When he wakes up, he finds himself transported back to 1988, appointed to work at a police station in a small city. Believing he is there for a reason, he tries to solve the case from the past in hopes of finding a way back to his life in 2018.

Tae Joo, a detective with principles, is asked for a favour by his ex-girlfriend, who is a prosecutor. While pursuing a man suspected to be a serial killer, he loses consciousness after getting hit by a car. When he wakes up, he finds himself in the year 1988. (Source: Viu)

Despite being confused of his current situation, Tae Joo works hard with the detectives in 1988 to solve a murder case. Upon looking at the case, he is certain that it is a serial murder. He has a hard time accepting the way that the 1988 detectives work and gets into an argument with Dong Cheol. Tae Joo is determined to find his way back to 2018. In order to do so, he makes a dangerous decision. (Source: Viu)

Tae Joo is confused as he can’t tell if he is dreaming or not. He wonders why he’s been sent to where he is now, but he can’t figure out why. Meanwhile, the detectives pursue the suspect of a pickpocketing case. By sticking to his principles, Tae Joo puts his colleague at risk. (Source: Viu)

A dead body turns up in a field of reeds. They find the suspect of the murder, but Tae Joo doesn’t think that their suspect is the killer. Dong Cheol disagrees and is certain that the person they caught is the murderer. Meanwhile, Tae Joo begins to remember parts of his past that he had forgotten about. (Source: Viu)

A woman reports a break-in, but as it turns out, nothing was stolen from her. Meanwhile, the gang at Seobu Police Station finds out about a similar case. They find out the one thing the two victims had in common and track down the victim. (Source: Viu)

Tae Joo meets his father, who passed away when he was young. Before he can recall the warm memories with his father, another murder occurs. In the midst of solving this crime, he is reminded of how important a father is in a child’s life. The closer they get to solving the case, the clearer his memories become. The missing puzzles of his lost memories come together. (Source: Viu)

Fugitives are on the run and have taken a family hostage in their home. Officers of the Seobu Police Department are the first to arrive including Han Tae Joo who makes it his mission to keep everyone alive. As the hostage situation worsens, the Seobu Police resort to desperate measures endangering their own lives to rescue the innocent. (Source: Viu)

A woman is found murdered in a motel room. Han Choong Ho, who was first released by the Seobu Police Department, is the first suspect in the case. But for some reason, Han Tae Joo is the only one who doubts the possibility Han Choong Ho is the one they should be after. Han Tae Joe’s reoccurring flashbacks of his childhood memories lead him to a place that might be where his father is but only confuses him more of the reality he now lives. (Source: Viu)

Han Tae Joo witnesses his father being shot at a reoccurring place in his memory and ends up rescuing his younger self hiding in the tunnel. Despite the warnings about the Seongho Gang, Han Tae Joo charges after Oh Jung Man, the boss and the man he suspects who had called the hit on his father and Go Yeong Suk, and brings him in for questioning. However, there is more to know for Han Tae Joo, as Oh Jung Man walks out smiling freely with a very influential man of Insung behind him. (Source: Viu)

Han Tae Joo’s pursuit of his father’s killer and the intangible Kim Min Seok gets more distant as the detectives of Insung are baffled once again when another murder case arises. Nothing seems to be certain. However, the body of the dead woman leads Han Tae Joo and the team to her house where they find traces of Kim Min Seok’s existence. Can all of these murders be connected, but how? (Source: Viu)
Available on: OCN