As Leo's replacement Thomas Chamberlain arrives Nikki investigates the murders of Rachel Freedman, shot in the head, and her little autistic son Nathan, who was poisoned. Nikki rejects policewoman Anne Burchett's theory that Rachel killed them both but is perturbed when an impostor, claiming to be Rachel's sister, visits the morgue. At the same time the disfigured corpse of Eva Liron is discovered, killed with the same poison as Nathan. She had been the nanny to French hot shot footballer Isaac Dreyfus and was planning to blackmail him over a sex tape of them both. Jewish Isaac is a controversial figure due to his anti-Muslim sentiments but he denies ant part in the murders. Then another victim, Isaac's agent Mousa, is discovered dead.
哈尔滨炮队街的离奇命案让警官冯剑白卷入了一系列神秘事件中。他的调查处处受阻，所有线索都被拦腰折断，身边与案件有关的，刘顺、赵秉琪、艾德烈等人一一死去，他本人也受到来自各个政治立场迥异的组织的威胁，多次命悬一线。但冯剑白从未动摇过寻求真相的信念。在关东军宪兵队、东北抗联、各国谍报机构的惊心暗战和竞相角逐的困境里，冯剑白咬紧牙关，抽丝剥茧，最终在一切的起点——炮队街的红屋顶小楼里，揭开了所有谜底，在盟友们的帮助和配合下成功截获反满抗日武装所需要的，却正被佐藤偷偷转移中的军火，并且粉碎了佐藤企图在哈尔滨进行细菌战试验的阴谋。
对自己没有自信，没有恋爱经验的30岁图书馆员聪子（波琉 饰），与温柔绅士的凉介（濑户康史 饰）相遇，瞬间坠入爱河，在每天过着想要改变自己的生活中，聪子面前突然出现了一个自称是法国文学《恋爱论》作者司汤达（小日向文世 饰）。惊讶的聪子觉得恋爱烦恼过多，眼前出现了妄想，但似乎没有什么害处，不仅如此，为了和凉介谈恋爱，司汤达运用恋爱的技巧引导聪子，慢慢地让她重生。逐渐靠近的聪子和凉介，但聪子有着谁都不想知道的秘密过去……
