Jirisan

One of the three hallowed mountains of Korea, Mount Jiri has been attracting visitors to its majestic grounds long before the park surrounding it was created. Founded in 1967, Jirisan National Park is the oldest and largest of the country's national parks, managed by a dedicated team of rangers who have devoted their lives not only to protecting and preserving the park but the countless visitors

Yi-kang asks Yang-sun about the Yang Geun-tak case and the yellow ribbon; Dae-jin wonders why Hyeon-jo and Yi-kang are on the mountain during the day of the accident.

After getting a call, Yi-kang searches for documents on Dae-jin's desk and finds something shocking. The rumours about ghosts on Jirisan start to spread.

Dawon, who has been on the mountain, catches Yi-kang discreetly going through Dae-jin's work diary from 2018.

As Yang-seon mysteriously disappears, Hyeon-jo, I-gang, and Gu-young team up to find him. Meanwhile, Hyeon-jo cannot get the person in his vision out of his mind.

Yi-kang expects a person with the same name as her first love to pick up an item. Later, she notices a suspicious car.