Jirisan
Rangers work to save people at Jiri Mountain National Park.
Seo Yi-Gang (Gianna Jun) is the best ranger at Jiri Mountain National Park. She knows virtually everything about the area, including where to climb the mountain.
Kang Hyun-Jo (Ju Ji-Hoon) is a rookie ranger at Jiri Mountain 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 Jiri Mountain National Park.