A series of rapes causes a stir in a German university town. A special commission led by senior public prosecutor Schildt and detective Gawilek investigates. After months of surveillance, everything points to a chaplain as the masked perpetrator, known as "Zorro". But the investigators were wrong, because "Zorro" strikes again when the chaplain is in custody. This time, charges were also filed. But not against "unknown", but against the son of the senior public prosecutor...