The Quincy forces are about to launch a relentless assault on the Soul Society and the World of the Living. Their advanced weaponry and abilities pose a grave threat to the balance of both realms. Upon facing a powerful opponent, the mysterious Kisuke Urahara is forced to reveal his Bankai for the first time. Meanwhile, Ichigo finally makes it to Yhwach’s throne room. Many crucial secrets are unveiled about the Quincy invasion's origins and the true nature of key characters. Rukia, Renji, Byakuya, and Kenpachi Zaraki face their own challenges against the relentless Quincy attackers.