Eric and his friends have long know about the mysterious and beautiful Zorfendorf Castle. But when Emperor Ko launches a surprise attack, the kids discover that the castle is not all it seems. Hidden deep under Zorfendorf is one of the most baffling secrets in all of Droon. Ko will do anything to discover that secret. And Eric, Julie, Neal, and Keeah will do anything to stop him!
1. At the Beach
2. playing with Models
3. The Big Red Book
4. A Bunch of Riddles
5. The Magic Word
6. Up, Up, and Away!
7. The Ring of Midnight
8. Big Head, Big Nose
9. Some Things Never Change
10. And Some Things Do