Air date: 2021-10-23

Runtime: 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.

Air date: 2021-10-24

Runtime: 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.

Air date: 2021-10-30

Runtime: 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.

Air date: 2021-10-31

Runtime: 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.

Air date: 2021-11-06

Runtime: 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.

Air date: 2021-11-07

Runtime: 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.

Air date: 2021-11-13

Runtime: 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.

Air date: 2021-11-14

Runtime: 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.

Air date: 2021-11-20

Runtime: 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.

Air date: 2021-11-21

Runtime: 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.

Air date: 2021-11-27

Runtime: 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.

Air date: 2021-11-28

Runtime: 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.

Air date: 2021-12-04

Runtime: 59 min

The rainfall causes fatalities. Hyeonjo discovers that the accident on the bridge was intentional and looks into the connections between the victims.

Air date: 2021-12-05

Runtime: 59 min

At Geomeundarigol Village, Hyeonjo catches a suspicious man in black gloves. After hearing his testimony, Hyeonjo starts to suspect someone new.

Air date: 2021-12-11

Runtime: 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.

Air date: 2021-12-12

Runtime: 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.