滚动的钢蛋

　　An insane man first loves then grows to hate his neighbor, an old man whose penetrating gaze unnerves the insane man. He plans a perfect crime and executes it one night. The next day, two officers knock on the insane man's door, investigating a shriek heard in the night. The insane man invites them in, answers their questions, and submits to an examination of his eyes by one of the officers, who proclaims him innocent. The insane man invites them to stay and relax awhile, then regales them with his theories of crime. His heart begins to beat louder. Angles on the set are skewed to suggest the man's internal disarray.

　　鬼子的飞机炸死了去镇上卖鱼的爹妈。那年，姐姐大荷花十四岁，弟弟小荷花十一岁。爹妈死后，大荷花担负起照顾弟弟。弟弟逢人就问：“鬼子为啥炸死我爹妈”，没有人能回答他。姐弟俩开始以自己的方式复仇。

　　一条善太郎（吉田钢太郎 饰）是快将退休爱偷懒的监察官，本来监察官就是负责内部调查警察的不良行为，是警察组织内被讨厌的对象，一条爱跟流行又时常乱用过时女高中生用语，看起来就是个废柴大叔，实际上是个厉害的监察官，可以看透人和事的本质，但他抱人性本善的想法，能不知不觉地投入别人的怀抱。
　　拍档结成真理亚（吉冈里帆 饰）是个毒舌美人，本来在警视厅搜查一课有着华丽的实绩，可以平步青云，但为了结婚而申请调到管理部门。不料在结婚当日被未婚夫悔婚，同时调职也受理而要到监察系工作，对方还是阶级比自己低的一条。一开始她以为对方是个很胡来的人，但在合作的过程中渐渐发现他隐藏的独特才能，从而找出疑犯是警察的连续杀人事件真相。