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.
【STORY】 故事讲述了一所学园的弓道部的故事。讲述了男部员立川达矢与天才的弓道伪娘不动权三郎之间不得不说的故事，乍看之下“男女”主角都是男性。 【CAST】 伪娘不动权三郎由中村绘里子饰演，而男主角立川达矢由国分和人担当出演。
舞台将设置在横滨街混乱事件发生三个月后，主角之一紫和失忆女孩楚楚再次以侦探的身份展开活动。阿特到底为什么要把枪对准尼斯？围绕这个谜团的真相将在今年夏天揭晓。
