在这部改编自网络游戏的史诗奇幻片中，一名内心矛盾的勇敢龙骑士必须用他体内龙的力量来阻止一个可怕的恶魔。

　　御茶水工业大学生早乙女和也，因恶友南原耕太郎的阴谋赠送的病毒CD发作、试图抵抗之下，居然莫名奇妙的连结到生化达因公司网站，还误订了生化娃娃（Cyber Doll，简称CBD）。快递员送来了生化娃娃小梅，开启了和也与小梅的故事。
　　生化达因公司所制造的生化娃娃，会睡觉、吃东西、看电视连续剧会感动得伤心流泪，外貌、个性、行为反应，各方面都和人类几乎没有差别。尺寸有六分之一大小的小梅，也有真人等比例的莎拉、小惠、与麻美。几乎都是美女，身材性感火辣，各有自己独特的魅力，再加上房东女儿小霞，真是美女云集，当然也有不少养眼服务观众的画面镜头罗！

　　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.

　　故事发生在1928年的美国，蓬勃的经济发展带来的不仅仅是更好的生活，一些肉眼无法看见的邪恶也在暗中滋生着。罗塞特（川上友子 配音）是马格达拉修道院的修女，同时，她也是一名怪物猎人。为了获得力量，罗塞特与恶魔克罗诺（石田彰 配音）结下了“怀表契约”，他通过吸食罗塞特的生命来维持自己的形象，在战斗时，更是能以生命为养料发挥出超强的战斗力。
　　罗塞特明白自己命不久矣，但她有一个心结必须在死前解开，那就是她的弟弟约书亚（皆川纯子 配音）。一次意外中，约书亚和罗塞特被迫分离，而这些年来罗塞特一直都在寻找弟弟的踪迹，她能在死前与弟弟重逢吗？就在罗塞特为了亲情奔波的同时，克罗诺的内心也进行着痛苦的挣扎。

　　The world of Remnant is filled with horrific monsters bent on the destruction of humanity. Fortunately, the kingdoms of the world have risen to combat these forces by training powerful Huntsmen and Huntresses at academies around the planet. Ruby Rose, Weiss Schnee, Blake Belladonna, and Yang Xiao Long are four such Huntresses in training whose journeys will take them far past the grounds of Beacon Academy. Though each may be powerful on their own, these four girls must come together to work as a team if they truly hope to become the next generation of Remnant's protectors. But can they succeed at each other's side when dark forces gather to divide and destroy humanity?