Mikio is a married man and works hard for the company where he is employed. Then one day Mikio is diagnosed with depression. Mikio's wife is Haruko. They have been married for 5 years. Haruko draws comics for work, but they do not sell well. She mainly relied on Mikio for support. Meanwhile, Haruko did not notice any changes in her husband. She begins to blame herself for not noticing any signs. Mikio's depression derived from his work. His company has been pressing him to quit the company. After Mikio quits his job his condition improves, but the dynamics of their relationship changes.

A record company office worker named Kanna discovers a punk rock band called Shonen Meriken Sakku 'Brass Knuckle Boys' through the internet and subsequently decides to represent them on behalf of her company. What Kanna did not know was that the Brass Knuckle Boys consists of all middle aged men.