Seasons & episodes
S1 · E1Episode 1 2021-10-23 · 72 min
Newly recruited park ranger Kang Hyeonjo is sent to search for a teen who has gone missing in Jirisan National Park but is impeded by a typhoon.
S1 · E2Episode 2 2021-10-24 · 83 min
While pursuing a vision on the mountain, Hyeonjo meets a man who's searching for his father’s ashes. The two continue their risky ascent together.
S1 · E3Episode 3 2021-10-30 · 64 min
The rangers stop a shamanic ceremony, and a girl passes a mysterious message to Hyeonjo. The team gets a report that an elderly woman has disappeared.
S1 · E4Episode 4 2021-10-31 · 59 min
Seo Yigang beholds a spooky scene in a video recording. Back in 2018, the team is unfairly blamed for the death of a villager.
S1 · E5Episode 5 2021-11-06 · 62 min
Yigang tells Hyeonjo that she saw someone with scratch marks on their hand. He suspects it may be the bomber. The rangers look for Lee Yangseon.
S1 · E6Episode 6 2021-11-07 · 70 min
Snow closes the park. Yigang learns that someone with the same name as her first love is coming to collect an item. A suspicious car approaches.
S1 · E7Episode 7 2021-11-13 · 60 min
Yigang realizes that Hyeonjo’s soul is wandering the mountain. In 2019, Hyeonjo sees a vision of a fire. The two are in danger in different places.
S1 · E8Episode 8 2021-11-14 · 61 min
Following a rescue attempt, Hyeonjo finds out that someone has been trying to kill him and realizes that the recent murders weren't a coincidence.
S1 · E9Episode 9 2021-11-20 · 60 min
Lee Dawon is missing. The rangers go in search and find Dawon’s phone, which contains a suspicious voice recording with an unexpected person.
S1 · E10Episode 10 2021-11-21 · 59 min
The police find a man lying in shock in the road. Yigang and Hyeonjo get lost on their way to a village and see ominous lights in the darkness.
S1 · E11Episode 11 2021-11-27 · 64 min
Cho Daejin is arrested as a suspect in Dawon’s death. Yigang develops a strong hunch that one of the rangers is actually the killer.
S1 · E12Episode 12 2021-11-28 · 59 min
The rangers search for groups of climbers trapped in the park by heavy rainfall. Yigang meets a survivor of the 1995 flood that killed her parents.
S1 · E13Episode 13 2021-12-04 · 59 min
The rainfall causes fatalities. Hyeonjo discovers that the accident on the bridge was intentional and looks into the connections between the victims.
S1 · E14Episode 14 2021-12-05 · 59 min
At Geomeundarigol Village, Hyeonjo catches a suspicious man in black gloves. After hearing his testimony, Hyeonjo starts to suspect someone new.
S1 · E15Episode 15 2021-12-11 · 59 min
Hyeonjo’s family decides to switch off his life support. The rangers start looking into people connected to the village, and Yigang has a revelation.
S1 · E16Episode 16 2021-12-12 · 71 min
After the truth is finally revealed, Yigang grills the perpetrator. The culprit goes to conceal some evidence, but there meets Hyeonjo’s soul.