Alice transfers to a new school where she becomes curious about the mysterious disappearance of a former student named Judas. Her classmates tell her ominous stories, suggesting Judas was killed by a group of girls who believed him to be the reincarnation of an evil figure from the Bible. Determined to uncover the truth, Alice starts investigating and learns about Hana, a reclusive girl who lives next door and was once part of the notorious group involved in the rumors.

Despite Hana's initial reluctance, Alice persuades her to join forces in solving the mystery. As they delve deeper into the case, their investigation leads them on a series of adventurous and sometimes dangerous escapades. They discover hidden secrets about their classmates and their town, revealing unexpected connections and past events. The quest not only brings them closer to solving the enigma of Judas’ disappearance but also leads to a budding friendship that helps each girl confront her own struggles and insecurities.