Yumi, a mother who supports her son who is aiming for medical college and supports him as a nurse. At that time, a sweet trap came from the director ... Yumi who forgives him instead of the promise of passing the exam of the director who has strong connections. The director who asks even during work. Gradually I wake up to the pleasure of the woman I forgot. However, with a single letter, those nasty days are over and what appears in front of Yumi who has a gap in her heart ...