Cha Hong-Do suffers from social phobia and has a problem with severe blushing. She does have a strong sense of curiosity and learns from books and the internet. One day, her grandmother, Cha Hong-Do’s only contact to the outside world, dies. She then begins doing housework as a maid, but disguises herself as an elderly woman. Through an incident, she meets a psychiatrist, Ko Yi-Seok.
