A beautiful-yet-awkward genius recruits three otaku to protect Akihabara. Powered only by their own delusions, and aiming to be acknowledged as a true Sentai team, they become the Unofficial Sentai, Akibaranger!

Taiga wakes up in an unknown place, next to Niina with whom he had lost contact. Confined in a school with former elementary school classmates and their teacher, they find themselves forced to participate to a sadistic game: "The Werewolf's game".