Ryōsuke Sagara 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. Ryōsuke 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 Mizuho Ninomiya at work.
Story of the struggling chorus group "Yamada Osamu and the Hello Nights", who gain an unexpected new member in the young Ai, who pursues her dream of becoming a singer.
Seiji Hirokawa works as a university professor. One day, his sick wife dies. Several days later, the intercom bell rings at his home and he sees a strange woman's face on the intercom screen. The woman asks "Is your wife at home?" Seiji Hirokawa opens the front door, but nobody is there. The president of the university where Seiji Hirokawa works suddenly dies. An election to select his replacement takes place. The election even involves the students and Seiji Hirokawa also participates. The professors are cautious with each other and a mysterious document spreads across the university. Meanwhile, Seiji Hirokawa carries guilt over his past behavior. Before his wife passed away, he had an affair with his sister-in-law Rei Mizushima. She works as an instructor at the same university. An unidentified body is found nearby at a garbage dump