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.

A little boy, who was rescued by a pack of wolves after he was separated from his family on a camping trip, grew up to be the wolves' protector against poachers and other humans who invade their sanctuary.