Yuko Ono takes on an endless challenge! She's tasked with completing missions without failing or being penalized by immediate sexual intercourse. Unaware of what lies ahead, she faces impossible tasks and merciless men eager to fulfill their desires upon her failure. Determined to win the prize money, she attempts various games like pinball, speedy orgasms, holding back moans during sex, and quizzes – all while struggling not to cum due to one mishap after another. Will this feisty beauty be able to overcome these challenges and claim victory?