A man mocks the fallen Iron Wings clan, belittling a former commander called Silver Wing as a traitor and a drunk. A defender argues Silver Wing once protected Sunlight Town, but the taunter points to the man's ruined mechanical arm as proof he's powerless. As a catastrophic super sandstorm hits, the disgraced commander takes charge, organizing the town's defense. The storm breaches their lines just as hostile forces announce their mission to seize all supplies and capture every survivor.