When her father’s company collapses, Maika’s husband is left with enormous debt as a cosigner. Working as an insurance agent, she desperately needs a major contract to repay it but cannot find new clients. Then she meets Ozawa, the wealthy chairman of a major corporation. He agrees to sign only if she wears luxurious lingerie designed to inflame male desire. Maika obeys for her husband’s sake, but the humiliating condition becomes an irreversible sexual contract of betrayal, leaving her elegant lingerie stained with saliva and cum.