Monsters from Magonian folklore become widespread, prompting a curious boy to see the legendary monster of a nearby cave, and ends up missing. But when Alfred and the others go to investigate the cave, it calls up unpleasant memories for Marius.

The party heads to the capital to allow Alfred and Maurice to report directly to Captain Georg. However, along the way, they pick up a pair of young Dayerehan twins, ostensibly survivors of a monster attack, who take a special liking to Alfred.

Alfred and Deflotte are imprisoned, and their jailer, the knight Lucan, is unsympathetic, so the two must resort to desperate measures. Didier reveals to the princess some hidden memories involving the king before sending her off to be executed.

The princess's forces are welcomed into the capital by an old friend. When it is learned that Captain Georg is leading the opposing army, Maurice goes off to confront him. Didier is sent into battle to buy more time. Marielle fears the worst for Alfred.

Alfred and Adelheid come face to face with their late fathers, and are forced to fight them. The truth behind Rugis's rebellion is revealed. As the showdown with Vall d'Hebron reaches its conclusion, some must make the ultimate sacrifice.