The story of the movie is somewhat based on the plot of the most recent game, "Sakura Wars 3," released back in March this year. While the game features Lieutenant Ohgami, the main character who takes off for Paris, narrates one side of the story, the movie unveils the secrets behind Hanagumi. Ohgami leaves for Paris, consequently leaving Hanagumi without a leader; thus a new character will be introduced here. To be replaced with Lieutenant Ohgami is the former leader of Hoshigumi, Rachette Artile - a rationalistic and distinct individual, who brings about serious problems to Hanagumi. The members are now in discord with Rachette. Meanwhile, Teikoku Kagekidan was being threatened by some irrelevant demons and a new type of anti-kouma mechas, (brought by an american company) appears and tries to replace the koubu-kai. Having made repeated mistakes due to the absence of Ohgami, Hanagumi is now faced with an unprecedented danger, while the abolishment of Teikoku Kagekidan Hanagumi is being schemed.
仓越超（由中村初中配音）是一名身材瘦削的普通初中生。一次偶然的机会，超在地下室遇到了一个被封印了五百年的怪物，不小心拔出了封印它的“兽嘴”，导致怪物回到了人类世界。潮水爆发出的惊人力量震惊了怪物，它立即表示向潮水投降。
这个女孩原本计划在东京的一所高中学习，但为了尊重自己的意愿，她的监护人福山义弘（Run Fukuyama配音）安排她的儿子申航（Aung Hui Naoyama配音）转到玉仓山黑谷高中，肩负着保护泉美的责任。起初，作为“凤仪”，泉水子体内封印着神秘的圣灵力量，这使她自称为各种邪恶生物觊觎和伤害的目标。原本性格不合的男孩和女孩在东京学习之旅的恐慌中相互理解。在神行的保护下，他们将面临各种挑战。。。这部电影改编自小原裕子的一部小说。
