Minerva, Ravi and Thomasina are certain that the gold key they found at Lizard Manor will grant them access to the legendary City of Ravagers, the long-ago home of a group of fierce pirates. All they need to do is find the door so that they can search for the ancient treasure of the ruthless crew. But perhaps there's more than riches hidden there. Will the city also shed light on the secret of Minerva's mysterious past?