YouTuber Tomoki Uchikawa, along with his friends Hinako, Souta, and Nanae, head to the former Ishio Village, where there are rumors of people being spirited away, to film a video investigating urban legends. However, their whereabouts remain unknown, and the police discover the rental car they had rented near a tunnel on the outskirts of the village. The video cameras left behind there show shocking images of locked houses, children in armed uniforms, imprisoned adults, and adults being infected by a strange disease, a rotten demon, that occurs on the night of a new moon.
Nikuko is a brash, jolly, scattered, and passionate woman in an otherwise sleepy seaside town in northern Japan. She’s also the single mother of 11-year-old Kikuko, who is her opposite in many ways. Kikuko is a string-bean of a young girl, pensive, quietly curious, and methodical in how she approaches life in this small harbor town. Nikuko embarrasses Kikuko as any mom of a preteen would, but Nikuko’s bold spirit makes her especially well-known in a town where Kikuko herself wants nothing more than to simply blend in. As Kikuko navigates the everyday social dramas of middle school, enhanced with touches of magical realism from her ever-present imagination, a shocking revelation from the past threatens to uproot the pair’s tender relationship.