An isolated private investigator is convinced by a friend to come out of hiding to help find her missing sister, putting him back in reach by those who want his family dead.

<p>　　伊格纳齐奥（图里·费罗 Turi Ferro 饰）的妻子早逝，他独自抚养着三个孩子尼诺（亚历桑德罗·莫莫 Alessandro Momo 饰）、露西安娜（蒂娜·奥蒙特 Tina Aumont 饰）和帕西诺（Stefano Amato 饰）长大。某日，伊格纳齐奥聘用了一位名叫安其拉（劳拉·安托妮莉 Laura Antonelli 饰）的女佣打理家务，这位安其拉拥有…