Red Berlin from the 1910s to the resistance against National Socialism comes to life as a proletarian family history. The siblings of Ernst Knaack, a communist who was executed in 1944, talk about their childhood and youth, which they spent with their grandparents. Their grandfather, a former sailor who took part in the November Revolution and was a member of the Workers' and Soldiers' Council, ran the Zum Kuli pub in Prenzlauer Berg—a workers' pub that was also frequented by the unemployed and homeless, where party meetings were held and leading KPD members such as August Bebel and Hermann Duncker were regulars.