Eun-yi is hired as a maid in a mansion owned by a wealthy businessman. He quickly starts seducing his employee who seemingly has little choice but to comply with his sexual advances. Soon the women of the family plot against Eun-yi who must fight an equally devious battle to protect herself.

A modern twist on Cinderella follows warm-hearted Hyo-sun, adored by everyone, and her guarded stepsister Eun-jo, whose painful past fuels a growing resentment as their mother begins to favor Hyo-sun.