Deep in the forest shrouded in black mist, Youlan wanders on the boundary between human beings and the unknown. She is a shadow chaser who specializes in hunting the secret creatures in the forest - those beings that parasitize the shadows and devour memories. Youlan's motivation is not heroism, but to find the truth behind her father's disappearance. She believes that the answer lies in the deepest darkness. Every time she goes hunting, she comes face to face with her own vulnerability and the treacherous nature of creatures. The forest is not a hunting ground but an indifferent judge. You Lan must choose between losing herself and uncovering the truth. The story depicts an edge contest between man and monster, reason and madness in a minimalist and cold tone, revealing the hidden tenderness and cruelty behind fear.