Oliver, a young black man who came to Japan to learn about Japanese culture, ends up staying with married woman Ai for a week as a homestay student. Attracted by Oliver's earnest and sincere love for Japan, Ai teaches him about the good things about Japan, including its cuisine and culture. One day, she accidentally sees Oliver after he gets out of the bath. She is so shocked by Oliver's long, thick, shiny penis between his legs that she is speechless, and since then she has not been able to get Oliver's penis out of her head...