The Gallian Militia receives new orders to attack the Imperial fortifications at the Mulberry Coast. However, due to the terrain, the only possible direction of attack is along the shoreline, which is completely exposed to the base's formidable defenses. Worse, the attack is scheduled to take place at the same time as the Holy Spirit Festival, a holiday that all Gallians celebrate. Squad 7 makes the best of the situation, and still manages to celebrate as the everyone give gifts to each other. Isara gives Rosie a handcrafted good luck charm doll, which Rosie accepts. Later, Isara manages to manufacture smoke shells for the Edelweiss to give Squad 7 a chance. During the attack, the smoke obscures the defender's line of sight and allows Squad 7 to breach the defenses. Emboldened by the Militia's success, the Regular Army finally joins the fight and forces the Imperials to retreat. Rosie is saved from being killed by a sniper thanks to the good luck charm from Isara. As the battle ends, her attitude with Isara begins to soften as she begins to view her more as a friend. As they converse, Isara is shot and killed by an Imperial sniper, much to Rosie's shock.
When Imperial forces attack the small border town of Bruhl, Welkin Gunther, son of late General Belgen Gunther, is forced to fight for his life alongside Town Watch captain Alicia Melchiott. Along with Welkin's adopted sister Isara, the three escape to Gallia's capitol and subsequently join the country's militia forces. As members of the newly-formed Squad 7, they must work to repel the invading Imperial forces and discover the true purpose of the invasion itself.
