This drama is a remake of the UK television series “Cleaning Up” that aired on ITV in 2019. It’s tells the story of three cleaners: Eo Yong-mi (Yum Jung-ah), Ahn In-kyung (Jeon So-min), and Maeng Soo-ja (Kim Jae-hwa) at an financial company who resorts to insider trading, in order to feed their family and fulfil their dreams, after accidentally overhearing a piece of financial information.