The protagonist Masaru has just inherited a large amount of property after his father's death. However, people are trying to obtain it through any necessary means, even if it means killing him. Narumi helped Masaru avoid being kidnapped after struggling with strange characters. He discovered that they were not humans, but wooden puppets with astonishing power. After a difficult struggle, Narumi was forced to admit that he was not their opponent; Just as he began to believe that Masaru would be captured, Masaru's defender Shirogane came here from France with a weapon - the puppet Arlequin. The story of the Karakuri Circus begins here.
她总是面无表情，没有人知道她脑子里在想什么，而且她的身材非常娇小，特别关心自己身高的黑井纱树（长泽麻莉娅配音）和对自己的性格非常认真的山本美博（福田美优配音）会认真对待任何离谱的事情（高桥李一配音）。故事围绕着这些可爱的女高中生展开，她们不同的性格碰撞成了一首异常动人的欢乐交响曲。
春假结束，料峭时节，南家三姐妹妙趣横生的小故事继续上演。散发圣母光芒的大姐春香（佐藤利奈 配音）继续照顾一家人的起居，当然时不时会懒病爆发；最大笑果夏奈（井上麻里奈 配音）在犯傻卖萌的路上高歌猛进，与藤冈（柿原徹也 配音）、理子（高梁碧 配音）以及姐妹闹出不少的笑话；看似不在乎周围一切实则冷静观察众人的千秋（茅原实里 配音），其吐槽功夫日渐纯熟，或者一言不发，或者一语惊人。从清爽的春天到炎热的夏天，朝气蓬勃，青春活力，呆萌的小姐们如约而至…… 本片根据樱场小春的同名漫画改编，是该系列动画的第四季。
