The thrilling and epic drama series tells the story of three young Polish women who band together to fight against the Nazi occupation of their country during the outbreak of World War II. Irka, Ewa and Marysia each come from very different backgrounds and social standings: Irka was raised by well-educated parents in a patriotic family, Ewa was brought up by petty criminals, and Marysia is a daughter of a wealthy Jewish industrialist from Lodz. Their paths cross together in occupied Warsaw as the Second World War intensifies.