"It will be a real adventure to go to Baronia" declares Mike as he, Nora, Peggy and Jack prepares to spend the summer in the home of Prince Paul; a land of steep mountains, lakes- and the Secret Forest.....
The towering Killimooin Mountains surround the Forest which, it is said, no man has ever entered. The children are certain that it hides the headquaters if a band of robbers who raid the countryside at night. By chance they discover the way into the Secret Forest and into danger. Will they now be able to find a way out?