一切都太相似了…。发生了年轻女性被绑架，随身物品一个接一个地送到家人身边的事件。曾经担任征信所调查员的财前彰太，曾被谷冈委托调查其女儿被绑架后、个人物品送到家人身边的事件动了很大的手脚，因而过上了豪华的生活，而真凶没有被逮捕。但事件过了18年后，财前的女儿美华失踪，她的随身物品被送来。在独自调查中，了解了妻子由布子的过去…

財前彰太（藤木直人 飾）是集團企業的社長，有著美麗的妻子（吉瀨美智子 飾）和乖巧的女兒（服部樹咲 飾），事業和家庭看似美滿。然而某天，女兒離奇失蹤，隨身物品一件件地被送回家中，這起案件和18年前發生的懸案非常相似，讓彰太不得不正視自己過去所犯下的錯誤，並試圖找出事件的真相…。

A young woman is kidnapped. Her belongings are delivered one after the other. Shota Zaizen is the CEO of Zaizen Corporation. He remembers a similar case 18 years ago, when he worked as a researcher at a private detective agency. That case involved a client's daughter who was kidnapped by a man named Tanioka and the victim's personal belongings like underwear, fingernails, pictures were delivered to the father. Shota Zaizen is shaken, because he found success by using that case from 18 years ago. Everything he has now is thanks to that case. The perpetrator Tanioka was never caught.

Now, Shota Zaizen's 18-year-old daughter Mika goes missing. Mika's belongings are delivered to Shota Zaizen. Shota Zaizen carries out an investigation by himself. He also discovers about his wife Yuko's past.

18년 전 흥신소 조사원이었던 쇼타는, 젊은 여성이 납치되어, 그 소유물이 가족에게 전해진다는 사건의 조사를 의뢰받는다. 조사과정에서 잔꾀를 부린 쇼타는 이후 자이젠 코퍼레이션 사장이 되어 화려한 생활을 했다. 그럴 때, 과거의 케이스와 흡사한 납치 사건이 발생. 게다가 쇼타의 딸 미카도 행방불명이 되어 버리는데...