It is named after the eponymous mountain in South Korea and has been promoted as "tvN's 15th Anniversary Special Drama".

[8] Set against the backdrop of towering views of Mount Jiri, it depicts the story of rangers and other employees of the Jirisan National Park who climb through the mysterious and unexplored regions of the mountain, trying to rescue the survivors and lost trekkers.

Writer Kim Eun-hee based the story of Jirisan on her interviews with national park workers.

"[25] On March 3, 2020, it was reported that Jun Ji-hyun was in talks to star in Kim Eun-hee's new television series.

[35][36] On September 25, 2021, tvN announced the series would air from October 23, on Saturdays and Sundays at 21:00 (KST).