When Grandpa Joe flies into another world, Hattie and Finn set off with Rory the Dragon to rescue him. The evil Overlord is holding him prisoner and it takes all of the children's courage and the magic powers of the dragon to set him free.
- ISBN10 1291243518
- ISBN13 9781291243512
- Publish Date 25 January 2013
- Publish Status Active
- Publish Country GB
- Imprint Lulu.com
- Format Paperback
- Pages 192
- Language English