An elderly couple, Masao and Ion, who plan to spend the rest of their lives in the countryside, regret that they did not accomplish many things when they were young. They feel that having each other's company is a great happiness, but... when they woke up the next day, they found that they had suddenly become young again! ? Masao proposes a honeymoon to Ion, and they decide to return to their married life as a newlywed couple.