Goku Black won. He killed everyone on Earth other than Trunks, leaving him to die there on a planet only he lived on. No time machine. No redos. Only thirty years waiting for him to return. However, thanks to an Angel's spur of the moment interference, Trunks wakes up in a new word as a kid again, and after a few years he is admitted to a prestigious academy with a not so simple Instructor and rowdy students.