The Akazas are a blue-collar family living in a working-class neighborhood of Tokyo. Older brother Inosuke is a carpenter who works for his father Shinobu's construction business. Younger sister Momoko is a truckdriver. Passions run high in the Akaza household and the two siblings are constantly bickering. One day, Momoko reveals she had a miscarriage but refuses to say who the father is.