Taiga is a high school student who is abducted on his way home and wakes up in an unknown place. He reunites with Niina, a childhood friend with whom he also had a romantic relationship, although they lost contact after Niina was transferred to another school. The pair is confined in a school with old classmates and a teacher, where they are soon informed that they will be forced to participate in a deadly and sadistic game called "The Werewolf Game" (Jinroh Game). In the middle of this situation of life or death, Taiga and Niina will reaffirm their feelings for each other.