Natsuki Subaru is a young boy who was transported to a different world than his own world. He meets a group of ruffians who beat him up and nearly kill him accidentally, luckily he is saved by a young girl in white named Emilia. Subaru becomes indebted to her and promises to help her find her insignia that was stolen from her. He tries and then dies. After death he returns to a previous checkpoint in his life in the new world and no one remembers what happened in the other timelines other then him. He has to then start life from zero in order to save Emilia from the Witch's Cult and the evil surrounding the selection for the next ruler of Legunica.