Yura, a mother, is worried about her son who has just had a broken heart and is feeling down. When her husband consults her, he half-jokingly says, "If there's one thing that cheers up a man, it's a sailor uniform." Taking this seriously, Yura really does dress up in a sailor uniform and goes to see her son in it. The son is confused by his mother's uniform and says, "I just want you to cheer up..." but from then on he can't help but be curious about his mother. His feelings gradually grow stronger, and the son can no longer bear it and finally...