Ryota Nonomiya is a successful businessman driven by money. He learns that his biological son was switched with another child after birth. He must make a life-changing decision and choose his true son or the boy he raised as his own.

Hino Mitsunari runs evening classes at a high school attended by foreigners, the elderly, and students struggling with various difficulties. The lessons are called “Community Ball” and involve everyone, including the teacher, sitting in a circle and thinking together on a question under the rule that no one should argue while someone is speaking. The various perspectives of the students all inform the film.