You were just spending some quality time with your childhood friend Suzuka at the local pool. Completely unexpected, a very well endowed woman appears from behind and starts jerking you off right then and there! She soon leads you away from your friend to the locker-rooms to finish the job. While searching for you, Suzuka stumbles upon you and this strange woman in the middle of the act. This woman then has the audacity to take it upon herself to teach the skills to your lady-friend--with you as the practice-dummy.