《战国BASARA》中活跃的武将们，在现代高中再次展开了激烈的战斗：前任学生会长“丰臣秀吉”遭到停学处分，学园内群雄割据，为争夺新会长之位成为乱世。
在一次戏剧表演中，Livia遇到了英俊的年轻纳粹军官Harot（Gabriel Garko饰演），并很快爱上了他。Livia的爱是强烈而毫无保留的，总是对Harold充满热情，而Harold只是在玩游戏，贪婪她的身体和金钱。这位纳粹军官实际上内心深处对战争深恶痛绝，所以他只想骗女人的钱，退休过上好日子。然而，他无法阻止Livia的爱和欲望将两人引向毁灭
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.
