Poor Sumi Kitamura… Her irresponsible older brother Eisuke keeps bringing home orphans for her to take care of even though they can barely afford their own basic needs! Just when Sumi's financial problems become dire, wealthy Soichiro Ashida enters her life with a bizarre proposition: he'll provide her with the money she so desperately needs if she agrees to marry him. But can Sumi fool high society into thinking she's a proper lady? Moreover, is it worth giving up everything for this sham of a marriage?

Soichiro's reputation becomes tainted when Sumi's true background is exposed, and even his position as president of his company is threatened! Sumi feels terrible for the trouble she's caused Soichiro, so she decides to leave him. Will Soichiro choose to let her go, or will he forsake everything for her instead?