One quiet morning, the pillar of the Kubo family died without warning, leaving only his wife's house (Matsuzaka Sakako) and three sons dependent on each other. After that, the uncle who came to the funeral (Yide on the shore) lived with them and formed a new family. In order to support the children, the house has several jobs and works hard, but the children still have different personalities and a lot of problems. The calm and mature eldest son Department (Masahiro Nagano) falls in love with the beautiful female college student Yuga (Kato Shashi), but the other person has a father complex; the second son Xingxio (Naoki Morita) is a straightforward and reckless teenager. one day he found that he looked different from his parents and brothers, so he began to doubt his own background; the youngest son, Hongji (Shigeya Ohagi), was in primary school and wanted to become a girl all the time. The story of the Kubo family unfolds slowly under the sky in Osaka. This film is based on Yumi Morita's cartoon of the same name.