50 years ago, the Seireitei was attacked by a man named Sen Valentine. Because of this attack, the Seireitei was almost completely destroyed before Sen's Zanpaktuō exploded due to him attempting to absorb the power of the Sōkyoku into his blade. As a lot of Shinigami Captains, Lieutenants, and other high ranking officers were killed in action, the Gotei 15 (There is a Squad 14 and 15) is currently experiencing a power vaccum. This arc will follow the emergence and rise to promince of a Shinigami named Meghan Allen. The particular stories that will be involved in this arc are as follows: