Yumi, an art student, is anxious about her assignment due the day after tomorrow. The theme is, surprisingly, "nude drawing." Unable to find a model, she is at a loss and is forced to ask her father and brother for advice. "I'll do it!" "No, I won't lose to you, old man!" As father and son compete, they begin to strip off one by one, until Nozomi is forced to ask, "Which one will you draw?" Yumi reluctantly chooses her brother, but during the drawing, he becomes aroused! Nozomi is confused...