Jirisan follows two rangers patrolling one of South Korea's most treacherous national parks, where a routine search for a missing hiker keeps turning into something far stranger than either of them expected.
What is Jirisan about?
The 2021 series centers on Seo Yi-gang, the most experienced ranger at Jiri Mountain National Park, who knows every switchback and blind ridge across the range. She is paired with Kang Hyun-jo, a rookie fresh from the military academy and a former army captain who carries a secret he refuses to share with anyone at the station. As the two are pushed together on search-and-rescue calls into the park's most remote and least mapped corners, what begins as ordinary mountain work slowly reveals a pattern neither of them can explain, tangled with Kang Hyun-jo's unspoken past.
About the cast
Jun Ji-hyun and Ju Ji-hoon lead the ensemble as the two rangers, with Sung Dong-il, Oh Jung-se, Kim Young-ok, Jo Han-chul, Jun Suk-ho and Go Min-si rounding out the park staff and the wider cast of hikers and officials drawn into the story. Between them the group covers everything from weathered park veterans to newcomers still learning the terrain, giving the series a bench of familiar faces from Korean film and television working across generations.
Context & significance
Director Lee Eung-bok, known for blending procedural structure with atmosphere and slow-building dread, sets the mystery against the physical scale of Jiri Mountain itself, using the park's fog, ridgelines and switchback trails as more than backdrop. The mix of drama, mystery and thriller genres lets the show move between rescue-of-the-week plotting and a longer mystery thread, a structure common to prestige Korean series built around a single striking location.
Watching Jirisan on Ktime
Jirisan streams on K-Time with a free account login, and the page itself is free to browse before signing in. Persian subtitles are available, so Farsi-speaking viewers can follow the ranger station's dialogue and the mountain-set mystery without losing the show's procedural detail, all inside K-Time's Farsi-first interface built for the Iranian diaspora audience.