 One day, a beautiful girl with a yellow flower hat at their front door, calling herself "Maroko Yomota," granddaughter of Inumaru who travels back in time with a time machine to visit her ancestors.Despite Tamiko's strong refusal to acknowledge her as a Yomota, Kinekuni and Inumaru welcome her to stay with them, and the structure of a happy family has begun to collapse.The episodes are told in the form of a play.