A notorious thief named Ban, breaks into a mansion, where a girl named Aya who has been sick for many years lives. Her father had taken her round the world for treatment, but his efforts were all in vain. Ban stumbles in on Aya in her room and she offers him a cup of coffee despite knowing he is a thief. After much hesitation, he accepts the invitation and they both talk about their sad stories. Touched by each other’s situations, they become friends and spend their days together, creating happy memories. One day, Ban comes to the mansion and discovers that Aya has died. Filled with grief, he promises to change his ways and become a good person.