Season 1
Seo Yigang is the best ranger at Jirisan National Park. She knows virtually everything about the area, including where to climb the mountain. Kang Hyeonjo is a rookie ranger at Jirisan National Park. He graduated from the military academy and was once an army captain. He has a secret that he can't tell anyone about. These two people become partners and they work to save people around Jirisan National Park.
01 Episode 1
1h 12mNewly 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.
2021-10-23 6.7
02 Episode 2
1h 23mWhile 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.
2021-10-24 6.7
03 Episode 3
1h 4mThe 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.
2021-10-30 7.5
04 Episode 4
59mSeo Yigang beholds a spooky scene in a video recording. Back in 2018, the team is unfairly blamed for the death of a villager.
2021-10-31 6.5
05 Episode 5
1h 2mYigang 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.
2021-11-06 8.0
06 Episode 6
1h 10mSnow 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.
2021-11-07 8.0
07 Episode 7
1hYigang 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.
2021-11-13 7.5
08 Episode 8
1h 1mFollowing a rescue attempt, Hyeonjo finds out that someone has been trying to kill him and realizes that the recent murders weren't a coincidence.
2021-11-14 8.5
09 Episode 9
1hLee Dawon is missing. The rangers go in search and find Dawon’s phone, which contains a suspicious voice recording with an unexpected person.
2021-11-20 8.5
10 Episode 10
59mThe 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.
2021-11-21 7.5
11 Episode 11
1h 4mCho Daejin is arrested as a suspect in Dawon’s death. Yigang develops a strong hunch that one of the rangers is actually the killer.
2021-11-27 8.0
12 Episode 12
59mThe 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.
2021-11-28 8.0
13 Episode 13
59mThe rainfall causes fatalities. Hyeonjo discovers that the accident on the bridge was intentional and looks into the connections between the victims.
2021-12-04 8.5
14 Episode 14
59mAt Geomeundarigol Village, Hyeonjo catches a suspicious man in black gloves. After hearing his testimony, Hyeonjo starts to suspect someone new.
2021-12-05 7.5
15 Episode 15
59mHyeonjo’s family decides to switch off his life support. The rangers start looking into people connected to the village, and Yigang has a revelation.
2021-12-11 7.0
16 Episode 16
1h 11mAfter the truth is finally revealed, Yigang grills the perpetrator. The culprit goes to conceal some evidence, but there meets Hyeonjo’s soul.
2021-12-12 7.5
Who is in it
Gianna JunSeo Yi-gang
Ju Ji-hoonKang Hyun-jo
Sung Dong-ilJo Dae-jin
Oh Jung-seJeong Goo-young
Cho Han-chulPark Il-hae
Joo Min-kyungLee Yang-seon
Go Min-siLee Da-won