Season 1

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 wak…

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 th…

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 stic…

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.…

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 tra…

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…

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 hosta…

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 possibil…

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…

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, th…

With the prime suspect ending up dead during questioning, the detectives of Seobu are thrown into confusion, having doubts and suspicions of one another. However, they press on unsupported and get closer to catching the…

The serial killer kidnaps Na Young. Her life is in danger. All the clues in her kidnapping are the same as the incident that happened in 2018, but this time, Han Tae Joo won’t let him get away. Na Young has been missing…

Han Tae Joo still remains in the year 1988 even after the serial murder case of Kim Hyun Seok concludes. For their role and duty, the detectives of the Seobu Police Department are ironically faced with a transfer. Capta…

Captain Kang Dong Cheol is a suspect in the death of Officer Shin and Chief Kim Gyeong Se. As a fugitive, he can only rely on Han Tae Joo to prove his innocence. Despite the evidence all pointing to Captain Kang, Han Ta…

Han Tae Joo wakes up in a hospital bed confused but back in 2018. He finally makes it back home where the people he had heard throughout his dream welcome him back. Han Tae Joo pieces back the fragment memories of his d…

After putting an end to the serial killings and finding closure for his father’s death, Han Tae Joo now understands the fate of his friends of the Insung Seobu Police Department that are back in 1988. He’s told the appa…