The film focuses on the naval warfare around the Battle of Coronel and Battle of the Falkland Islands during the First World War. It was the last in a successful series of documentary reconstructions of First World War battles by British Instructional Films made between 1921 and 1927.
In the 18th century, Robert's beloved Helena is forced to marry the cruel Henrik Brest. Robert becomes Roope the Pirate, the most famous pirate in the Baltic Sea, whose legendary life includes scheming and partying, sword fights and women's adventures.
