One day, Shinobu Takamura (Asami Mizukawa) visits her local supermarket and is accused of attempting to use counterfeit money. Security camera footage from 10 minutes earlier shows her buying items at the register, but at that time she had not even arrived at the store yet... A police detective takes Shinobu into custody, and the truth he reveals is beyond her wildest imagination: the woman caught on camera is a “bilocation,” a being that perfectly resembles a human physically but has a completely different demeanor. The policeman tells her its personality is more violent than her own, and that it will surely come to kill her. He takes Shinobu to a meeting for people plagued by bilocations, where she meets university student Takumi Mitarai (Kento Senga) and mysterious youth Sakae Kagami (Sho Takada)...

ある日スーパーでニセ札の使用容疑をかけられた高村忍(水川あさみ)。
10分前の防犯カメラ映像には、いるはずのない自分が映し出されていた。連行された忍は、刑事から想像を絶する真実を聞かされる。“バイロケーション”それは、自分と同じ容姿でありながら全く別の人格を持つ、もう一人の自分。通称バイロケと呼ばれるその人物はオリジナルよりも凶暴な性格を持ち、必ずオリジナルを殺しにくるのだと。バイロケに悩む者たちが集う「“バイロケーション”の会」へと連れてこられた忍は、大学生の御手洗巧(千賀健永)、謎めいた少年・加賀美榮(高田翔)らと出会うのだが・・・。