During the protracted Holy Demon Wars on the continent of Synapse, Commander Hewie leads a daring mission to seize the invincible Boleblade Fortress and its powerful magical cannon. Despite the high risks and internal dissent, Hewie employs a cunning strategy and coordinates with his allies to overcome the enemy defenses. Through strategic deception and timely reinforcements, the army successfully reclaims the fortress after 141 years, securing a pivotal victory in the conflict.