The story follows Lucy, a girl growing up in a village deep in a forest inhabited by monsters, as she slowly begins unravelling the mysteries that surround her. During the day, Lucy spends her time with her friends or helping her mother. But at night, she is haunted by terrible nightmares, listening to the horrible growling coming from beyond the town limits. One thing is clear to her: the dark brings terrible danger, and she must never set foot in the forest. But when tragedy strikes, she has no choice but to delve into the forbidden woods and face her fears.