“Nemesis”是用正义的铁锤粉碎邪恶的希腊女神。以此为名的侦探事务所有着许多谜团。这里聚集了拥有天才般的灵感，但做事鲁莽的安娜（广濑铃饰），与虽然废柴却有很高名望，自称天才侦探的风真（樱井翔饰）。两人相互协助，一起挑战疑难事件。这对活宝搭档的目的是寻找安娜突然失踪的父亲。但每次解决完一个个事件，即将找到与父亲相关的线索时，又诞生出新的谜团。看似毫无关联的事件相互联系，惊人震惊的真相浮出水面。他们发现，解开所有谜团的关键是被埋藏于黑暗之中的20年前的某个事件

azama Naoki is a crack detective at the private investigation firm Nemesis in Yokohama. He has a brilliant mind like Sherlock Holmes and solves every difficult case. But the true detective is actually his talented assistant Mikami Anna. The two of them, who make quite an odd duo, are searching for Anna’s father Hajime. He is a scientist and went missing all of a sudden. Together with Kurita Kazuaki, the owner of Nemesis who is Hajime’s good friend, Anna and Kazama seek clues to his disappearance. As they take on one puzzling trick-ridden case after another, they seem to find a hint related to her father each time that brings about a new riddle. Then they learn that the key to solving the mystery of his disappearance is a 20-year-old incident that has been buried in darkness. What Anna does not yet realize is that both Kazama and Kurita are connected to this incident.