Sosuke Tashiro is on an elite career course at a major bank, until he is transferred - or rather relegated - to a subsidiary company, where he reaches retirement age. After decades of single-minded dedication to his work, he finds himself at a loss. Days pass with nothing for him to do, and time goes by at a snail’s pace... Sensing that this is no way to grow old, Sosuke starts visiting a sports gym to get back in shape, and tries to kill time at a local library.