Kokone has university exams to prepare for, but instead she dozes off. Even when her father is unceremoniously arrested prior to the Tokyo Olympics and the family is hiding away a mystery or two she finds herself taking refuge in sleep where thrills await her. Could there be more to her dreams?
It is just another suburban town until the day two events gradually begin to change things forever. First we see a rash of graffiti featuring a local girl, Haruko Azumi, in a series of spray-painted "Missing Girl" posters appearing on the walls of the town. The other, more sinister event is the rise of a gang of vicious high school girls making random attacks on men. The local press covers the story, the graffiti goes viral on the internet and the entire story becomes one of the hottest topics on Twitter. On close examination it appears there is a connection, perhaps the Girl Gang have been inspired by the "Haruko is Missing" posters and have decided to take revenge on all men. This suspenseful tale features the daily lives of japanese women from various age groups, teenage high-school girls, young women in their 20's just starting their careers, and working women in their 30's, long considered by Japanese custom to be 'past their peek'.
Not only is Kamakura-based Masakazu Isshiki a mystery novelist, but he is also a good detective himself. His wife Akiko and he are acquainted with all manners of creatures and gods who are of, from or passing through the town. Dealing with and tackling his cases means he can use all the help he can get.
Three mothers have sons with the same name of Yu Ishibashi and they are all 10 years old. In Kanagawa, Rumiko Ishibashi is 43-years-old and she works as a freelance writer. She is married to Yutaka, who works as a freelance cameraman. They have a 10-year-old son Yu. In Osaka, Kana Ishibashi is a 30-year-old single mother. After her divorce, she has worked part-time jobs and raises her 10-year-old son Yu alone. In Shizuoka, Asumi Ishibashi is a 36-year-old housewife. She is married to Taichi and they have a 10-year-old son Yu. Her husband works as a salaryman. These three women are happy and busy raising their boys. Due to some little thing, their lives fall apart. Their anger and anxiety unconsciously head towards their sons.