Satoru Fujinuma's power of Revival has sent him eighteen years into his past to relive his middle school days and prevent the death of his classmate Kayo Hinazuki. But even with the advantage of foreknowledge, Satoru finds himself unable to prevent Kayo from becoming a victim yet again. Back in the present, twenty-nine-year-old Satoru is still on the run from the police and no closer to identifying the killer who stabbed his mother. With friends past and present in mortal danger, Satoru rallies for another leap to 1988, resolved to go to any extreme to save Kayo and bring her and his mother's murderer to justice.