When Detective Moo Jin Hyuk's wife is brutally murdered, Kang Kwon Joo, an officer with superior auditory abilities, listens on the other end of the 911 call. Three years later, Jin Hyuk and Kwon Joo find themselves working together.

Jin Hyuk rushes to get to Bok Rim before it's too late. Kwon Joo compiles officers with varying expertise for her Golden Time Team.

Time is running out for Ah Ram as Kwon Joo tries to decipher the xylophone sound. Kwon Joo tells Jin Hyuk her side of what happened three years ago.

When Go Dong Chul's death is ruled a suicide, Kwon Joo realizes she must take things into her own hands. Jin Hyuk hurries to find the victim, whom he knows personally, of a kidnapping case.

The clock is rapidly ticking for Kwon Joo as her captors prepare to bury her alive. Meanwhile, Eun Byul's own life is in danger as she's hidden in a location unknown to the police.

Kyung Il reveals to Kwon Joo that he witnessed her father's murder. Jin Hyuk and Kwon Joo go off on their own, feeling closer than ever to finding the perpetrator.

When a dead body falls out of a supposed victim's closet, Jin Hyuk and Kwon Joo realize the case goes much deeper than they had initially expected.

Jin Hyuk tries to escape the clutches of Good Friend, who don't quite live up to their name. The hunt for the perpetrator continues, but he is not an easy target.

An accusatory post about Hyun Ho appears online. The Center receives multiple calls when a night club suddenly turns into a nightmare.

Yang Ho Shik ambushes Eun Soo while Jin Hyuk and Dae Shik are led astray. Things become even more personal when Dong Woo is put in danger.

The elusive Nam Sang Tae prepares to flee the country, but the police are determined not to let him get away this time. A 911 call brings the Golden Time Team to a hostage situation on a rooftop.

Kwon Joo realizes they may have written off Baek Jin Gu's claims too quickly. Later, she finds troubling information related to the Eunhyung-dong case.

Jin Hyuk goes to meet Nam Sang Tae by himself, hoping for answers. Kwon Joo looks deeper into the relationship between Ji Hye, Kong Chul Hwan, and GP Development.

All hell breaks loose when Kwon Joo recognizes Tae Gu's voice. A serious bus accident threatens the lives of many, including a pregnant woman and a child.

As gas continues to leak from the bus, the chance of an explosion heightens. Jin Hyuk must face the undeniable truth about Dae Shik.

Jin Hyuk and Kwon Joo sneak into Tae Gu's killing lair, unaware Dae Shik is inside. Can they capture the crazed murderer before he escapes? Find out in the thrilling series finale.

Strange emails are sent to Kwon Joo. She thinks they’re just prank emails, but soon, she realizes the emails have been forewarning her of murders. She starts to track down who sent the emails. Meanwhile, Derek Cho, a detective from the U.S., is working temporarily in Korea. He has a younger sister who has a speech impediment, but she’s abducted and in danger.

Kwon Joo and Derek finally meet in person at the Vimo Provincial Police Agency. However, when Derek checks the suspect’s face on the CCTV footage from the airport, he does not hesitate to point his gun at Kwon Joo. Meanwhile, a call comes in about a mysterious wild animal that dragged a person off in Mosim Forest.

The call center receives a phone call from the missing woman, Jang Ye Sook. Kwon Joo tries her best to hear anything over the phone that might help the team get to Ye Sook in time. Meanwhile, Derek, who joins the Golden Time Team, finds a piece of clothing with a bite mark on it. The team puts all of their effort into saving the victim before it is too late.

The Golden Time Team heads to the hospital in search of the fleeing suspect, Gong Su Ji. Meanwhile, Han Woo Ju, a cyber agent who runs the fansite for the Golden Time Team, brings in a helpful clue. Then, a call center receives a report about a haenyeo who claims to have seen her granddaughter’s dead body in a cauldron in the sea.

Kwon Joo’s team and Derek continue to look for Su Ji and Ga Eun. Su Ji’s belongings and what seems to be her will are found near the beach, and the local police officers assume that Su Ji committed suicide. Meanwhile, Ga Eun who was abducted by the drug smugglers tries to run away, risking her life.

Kwon Joo’s profiling leads to the conclusion that the Circus Man is in fact a man with multiple personalities. Derek and the Golden Time Team continue questioning the suspect as Dae Shik rejoins the dispatch team. Meanwhile, a call comes into the 112 call center from a man who is being chased by someone with a knife. Kwon Joo sends the Golden Time Team to the scene.

Kang Man Ho’s father, Kang Seok Chun, is supposedly dead on paper. However, he is still alive, and his hidden story comes to light. Meanwhile, Derek hears the truth from Director Yang about his mom’s death 28 years ago. Also, Woo Ju sets up a trap online to catch the Circus Man. Meanwhile, a mysterious user approaches him.

The Golden Time Team conducts a discreet operation to catch the user they believe to be Circus Man. Meanwhile, Eun Soo volunteers to transfer to the dispatch team. As they chase down Circus Man, a local high school teacher calls the 112 Call Center about his student who has gone missing after leaving an ominous voicemail.

Derek and Dae Shik finally catch the man who is suspected to have abducted and confined Saet Byul and Hyo Joon in a motel room. But he says he was also forced by a woman for money. Eun Soo manages to enter the motel and finds a path that leads to a hidden room. Meanwhile, Kwon Joo bumps into a stranger in a stairway, but she instantly recognizes him by his voice.

The man who Kwon Joo bumped into in the stairway was Dong Bang Min. He threatens Kwon Joo with a knife. Fortunately, Derek and Dae Sik arrive to save Kwon Joo. Dong Bang Min soon gets released thanks to the connection between the Commissioner General and his grandfather, the head of Sonang Village. Meanwhile, Kwon Joo and Derek find out more about Joo Bum Tae from his schoolmate. And they also hear about a kidnapper who is quite short.

The Golden Time Team arrests and interrogates Kwak Man Taek, the man who works for Dong Bang Min, after he confesses that he is the Circus Man. However, during the interrogation, he has a seizure and acts very strangely. Meanwhile, Kwon Joo figures something out while analyzing Dong Bang Min’s many voices. Then, someone breaks into the Golden Time Team’s lodgings.

Kwon Joo and Derek chase after the person who snuck into the dorm. Kwon Joo sees something from a past dream that she had. Derek saves her from imminent danger, and they find out why they both saw strange visions. As the secrets of Sonang Village slowly come to light, Woo Ju informs the team that Saet Byeol has disappeared from the shelter.

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We don't have an overview translated in English. Help us expand our database by adding one.