Set in the Joseon Period, three beautiful musketeers fight against a powerful group who tries to overturn the royal family and gain absolute power. The leader of the Beautiful Three Musketeers is Jin-ok, a smart and righteous woman. Hong-dan is the only married woman among the three women. Ga-bi is the youngest among the musketeers and excels at fighting.
When a single mother learns that she has terminal cancer, she prepares her young daughter to live without her, while saying goodbye to others around her.