Heart of Wolf continues the gripping Thousand-Year Blood War arc explores the conflict between the Soul Reapers and the Quincy invaders. Unable to use their Bankai special abilities, the Soul Reaper captains are at a severe disadvantage against the invading Quincy army. Urahara has a plan to turn the tide of battle, but will it be enough as the Quincies continue their onslaught? Bazz-B's tragic past is revealed, shedding light on the deep-seated animosity between the Quincy and the Soul Society.