Shiori is a High School girl, born in Tokyo, is also not good at arguing herself. Her mother, Satomi is a researcher of artificial intelligence and has little time to spend with Shiori. Yet, Satomi, an education-obsessed mother, forces Shiori to study to get a job in the future. Since Shiori gets tired of this and also lost a friend, she stops going to school. And, she has chance to visit a southern island to see her beloved grandma, who taught Shiori playing Japanese drum. At the island, she finds a robot which is remotely controlled by a young man who became paralyzed by a traffic accident. Communicating with the robot, Shiori finds her way to live again.