An mysterious reiatsu (spiritual particle) explosion occurs in the middle of Seireitei at Soul Society, causing it to be destroyed. At the specific same moment, a major change overwhelms Kuchiki Rukia, which renders her something crucial indoors. Urahara Kisuke sends Kurosaki Ichigo to Soul Society to investigate the disturbance. His ally shinigamis attacks Ichigo upon attaining Seireitei