“Let us make your penis bigger!” The clinic promises gains of up to five centimeters, fully private rooms, and a gift card worth ¥30,000. Despite the tempting offer, hardly anyone comes in for treatment. The female staff insist that women prefer bigger cocks, so the production goes undercover at a famous male enhancement clinic to find out how far its desperate counselors will go to secure a contract. When confronted with a fully erect cock, will they even agree to sex? Three counselors renowned for their exceptional looks are selected for the test.