After her husband kills himself, future prospects for the demure and beautiful Mitsuko Fuji look incredibly bleak. Fortunately, her dead husband's largest creditor, Mr. Kito, is there to offer a shoulder to cry on as he offers to settle all her debts. But, sure enough, Kito's charity comes with certain strings attached; namely that Mitsuko becomes his personal sex slave. Things become even more complicated when Kito's son Kazuhiko falls for the helpless widow, throwing into jeopardy his own marriage plans.