1930s Korea, in the period of occupation, a woman is hired as being a handmaiden to a heiress who lives a life to a countryside mansion together with her domineering uncle. However, the maid has a secret: she's a pick pocket recruited by a swindler posing as a count that will help him seduce the heiress to elope with himrob her of her fortune, and lock up in a mad house. The master plan seems to move according to plan until the women discover some emotions that are unexpected.