The married woman borrowed money from a loan shark to cover her husband's company debts, but as the repayment deadline approaches, her financial situation worsens. The loan shark's owner—a perverted rubber fetishist—offers to erase her debt in exchange for rubber-based sexual services. Initially reluctant, she agrees under pressure. However, after experiencing various rubber-related acts, she becomes addicted to the pleasure, no longer caring about her debt, and begins actively seeking out rubber play. This is the first part of her erotic journey.