Midnight school. A "red person" appears . The life of a high school girl, Asuka, changes completely from the day when a young girl who shouldn't be in school one day said an eerie word, "Look for my body." At midnight that day, Asuka noticed that she was in school at midnight with her five classmates, and suddenly a girl "Red Man" whose whole body was stained with blood appeared and killed all of them one after another ... .. And from that day, 6 people will repeat the same day. The only way to reach tomorrow was to find out all the dismembered "body" of a girl hidden in the school. This loop doesn't end until you find all your bodies.