In order to get back her husband who suddenly disappeared, Ririka had no choice but to participate in the anal fair ``Chikuan GP'' where anal enthusiasts gather. Ririka is thrown into a dark and closed basement and trained anal to win the best anal position. When the fair begins, the anal color, luster, number of wrinkles, and every corner are checked. She was Ririka who managed to endure the days covered with such shame, but her anal that continued to be blamed repeated climaxes many times against her will.
