Detective Rose Cotta unwittingly becomes involved in the major robbery of gold from Metallotechniki. Her great love, Sergeant Savvas, has officially taken on the case and is sad to find out that his sweetheart is also mixed up in this robbery. Meanwhile, in order to escape arrest and get away from Rose Cotta, who is constantly on their trail, the robbers lead her into a minefield. Savvas, trying to save her, puts the "siege" plan into action...