Sagara Ryosuke is an ordinary salaryman and he works for a mid-size shipping company. He is a good natured person. His family consists of his wife Maho, high school student daughter and elementary school student son. Maho works part-time at a supermarket. They are a happy family, but, Maho and their two children suddenly disappear. There are no clues about their disappearance. Ryosuke gets the attention of the media and public. He tries to find the truth behind his family's disappearance with the help of his subordinate Ninomiya Mizuho at work.