Eo Yong-mi, Ahn In-kyung and Meng Soo-ja are cleaners at a securities firm. The head of the house, Yong-mi struggles to provide for her two daughters. In-kyung dreams of opening a cafe with a food truck. Soo-ja is friendly with everyone and has top survival skills. They sweep the floors hard to make a living and fulfil their own dreams. When opportunity arises in the form of insider trade, the ladies begin their rebellion.