Sayaka, a female college student, can't have sex anymore as her boyfriend is studying abroad for over a month. She can't stop getting horny every day, and she can't help but be bothered by the moans of the man living next door who calls in a prostitute and does lewd things to her. One day, after more than 30 days of abstinence, she goes to complain about the loud moans. The man comes out completely naked, and when she sees his dick, she gulps. She doesn't like this disgusting old man... Ah! Her body wants the best!