Summer Swallowed by Blackness

After her grandmother passed away, Na Su-Hyeon returned to her hometown after settling down in the city. As if drawn by something, Su-Hyeon climbs Mount Obong, which her grandmother had told her never to climb while she was alive. When she gets lost in the mountains and is caught up in strange events and is in danger, Su-Hyeon receives help from a man named Seo Moon-Ju, who is still fine even after being beheaded... Moon-Ju tells her that Su-Hyeon is the reincarnation of her former divine mother, the shaman Kang Yu-Hwa, and that the strange events that are unfolding before her eyes happened because Su-Hyeon climbed Mount Obong. Moon-Ju seems very suspicious, but after she encounters ghosts who steal the weapons buried in Kang Yu-Hwa's grave and gain power, Su-Hyeon feels a sense of respo