The Holy Grail War continues to escalate as a series of shocking revelations explain the history connecting Saber to Excalibur. In a lethal game of chess, pawns and knights are expended one by one, slowly whittling down the number of surviving players. As a massive wave of comas begins to take down the cities, it becomes clear that the only possible path to victory is an assault on the Master and Servants of the Ryudoji Shrine! But when Sakura is taken with the intention of sacrificing her in order to summon the Grail