1930s Korea, in the period of Japanese occupation, a new girl is hired as a handmaiden to a Japanese heiress who lives a secluded life on a large countryside estate with her domineering Uncle.

But the maid has a secret. She is a pickpocket recruited by a swindler posing as a Japanese Count to help seduce the Lady to elope from him, rob her of her fortune, and lock her up in a madhouse. The plan seems to proceed according to plan until unexpected emotions are discovered.