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.
同一天，身着黑衣的美女黑泽菊里受哥哥委托，将一个银色手提箱交给夏目直树，并唤醒一种名为“聪明的魔神”的神秘武器。借着获得这个手提箱的机会，志纯了解到了这个世界隐藏的真相——上帝已经抛弃了人类，这个世界一度被摧毁，利用“恶魔”的力量重新生成了“第二世界”。被命令使用武器拯救世界的志纯遇到了一个自称是恶魔的女巫，以及一个同样被鬼魂困扰的学生校长。男主人公被无数不同类型的漂亮女孩包围，华丽的故事应该开始了
