Ko is back in power---and nothing in Droon is safe! His beasts have found a lightning -powered submarine hidden in the secret Fortress of the Treasure Queen. Now Eric and his friends have to stop Ko before he destroys Jaffa City. But first they'll need help from their worst enemy---Lord Sparr. If he can be truted…
1. Mission of Mystery
2. Enemies New and Old
3. Dragon Eyes
4. Little Sparr, Big Ninn
5. Traders or Raiders?
6. Memories of the Future
7. sparr Plus Sparr
8. The Great Escape!
9. Hands of the Sorcerer
10. All of Droon