After a contract dispute leaves her husband's company facing a huge penalty, Rio interviews at Ozawa's firm to help save her family. Ozawa is looking for more than an ordinary secretary: he wants a mistress who supports him in every way, including sex. Rio accepts for her family's sake, and Ozawa tests her resolve by licking her lips and tongue through deep, obscene kisses. Once hired, she gradually begins to crave their sweaty encounters in the president's office, surrendering herself to passionate sex and creampies.