Asumi is invited by a friend to a luxury hotel pool, but she can't swim. By chance, her husband's subordinate Murakawa happens to be there and ends up teaching her how to swim... Asumi's voluptuous body arouses Murakawa, who casually gropes her during the lesson, stimulating her body. Asumi's sensitive body responds to his caresses... Before she knows it, she is taking adult swimming lessons. Asumi is wet from the pleasure she hasn't felt in a long time and can't resist asking for lessons again...