Hideaki is kidnapped and when he awakens the next day, finds himself in a recreation of his old schoolroom, along with his recently reunited classmates. Trapped and held captive by mysterious hooded figures, each of them must now play a brutally violent, version of the punishment game... or face death. A twisty, horror/mystery 'mash-up' peppered with dark humor and inventive gore, director Y(hei Fukuda's ('Chanbara Beauty') shows how revenge is a dish best served cold and not very sweet; Japanese style.