Five Hundred years ago Prince Ivor of Samavia disappeared. The little country has never been the same since.

Young Marco Loristan, himself an exiled Samavian and his friend, a crippled London street child known as 'the Rat' are dispatched on a secret mission by Marco's father, a strong Samavian Patriot. They travel across Europe delivering secret messages for the secret society devoted to returning the heirs of the lost Prince Ivor to the Samavian throne. They have several quite exciting adventures as they travel through Europe.

With four illustrations.