As the illegitimate daughter of the castle lord, the young maid Resa has little good to expect from her mistress Rodegard. Unintentionally, she also gets in the way of the marriage plans that Rodegard is forging for her own daughter. Without hesitation, Rodegard has the girl taken to a Berlin brothel. Stamped as a prostitute, Resa is now part of society's scum. But during the bloody barricade battles of the March Revolution, a wounded young man suddenly stands before the locked gates of the brothel and asks Resa for help. Is Friedrich Resa's chance to reclaim her life and take revenge on Rodegard?.