When Alice moves to a new town, she discovers her classmates are obsessed with a bizarre mystery. The 'Judas murder' apparently saw one boy disappear, with the other students believing there was a supernatural cause behind everything. Unable to get straight answers, Alice finds herself drawn towards her reclusive neighbour Hana who has refused to return to school since the incident. Together, Hana and Alice start to uncover the truth behind the mystery. Director Shunji Iwai revisits two of his most popular characters in this charming animated prequel.