Hikaru's younger brother borrowed money from the underworld to invest. He lost everything and now has to repay both the principal and interest to the creditor. He asked his sister, Hikaru, for a loan, but she doesn't have that much money. Captivated by Hikaru's beauty, the creditor agrees to forgive the debt of Hikaru's brother with one condition. That is to work as a maid for him for three days. On the first day of work, Hikaru is forced to wear a very revealing maid outfit, accentuating her huge breasts. And of course, Hikaru has to obey his orders, even letting him have sex with her! Initially, Hikaru shows reluctance, but with her adept lovemaking skills and the aphrodisiac that he secretly gave her, Hikaru gradually succumbs to him...