This article presents the biography of Cywia Lubetkin focusing on her fate during the German occupation and the period of her activity in the Jewish underground, her engagement in the combat and her hiding on the “Aryan” side. It bases mostly on Cywia’s interviews and texts and talks about the evacuation of the fighters after the fall of the Warsaw ghetto uprising and the fate of that handful of survivors. They contacted the Polish underground, cooperated with Żegota (Council to Aid for Jews [Rada Pomocy Żydom]) helping many hiding Jews, preparing for further combat against the Germans and planning post-war life in the Jewish state. Cywia was actively engaged in that activity, she provided inspiration and help and organized the everyday life of the group of people living together. The Jews also participated in the Warsaw Uprising and after its fall a few of them were successfully evacuated from a house in the Żoliborz district of Warsaw, partly thanks to Cywia’s initiative.