Jirisan also released an initial poster today, in which Jun, playing a national park ranger, walks into a forest engulfed in flames. In the mountains like Jirisan, crises come from downpours, floods, and fires. She has to take risks and rescue victims out at the frontline. The tagline on the poster also lists the first principle for rangers: “Our job is to return alive from dangers”. A mysterious silhouette in the title font is a clue to secrets in the mountains. It adds another layer of suspense before the premiere.

The story is based on interviews with national park workers by writer Kim Eun-hee. “When I wrote Jirisan at the beginning,” said Kim, “it didn’t focus on rangers. I was more interested in stories about mountaineers. However, I was more intrigued about their work after interviews.” Many amateurs often get injured or stranded as they let their guard down after reaching mountaintops. Rangers, instead, believe that “the top objective of mountaineering is leaving alive”. Even under downpours, snowstorms, landslides, typhoons, and other inferior weather conditions, rangers are committed to rescuing victims in the mountains. “They are really the mountain keepers,” said Kim.