Professor Sponge is at it again! This time he takes his grandchildren, Max and Lucy, and their dog, Soap, on a journey to a mysterious planet where ghostly, shape-changing, holographic aliens appear at every turn. As the professor and the children desperately try to escape, they realize that Soap has disappeared!
- ISBN10 0694008125
- ISBN13 9780694008124
- Publish Date 4 October 1995 (first published 1 September 1995)
- Publish Status Out of Print
- Out of Print 18 October 2003
- Publish Country AU
- Publisher HarperCollins Publishers (Australia) Pty Ltd
- Imprint HarperCollins (Australia) Children's
- Format Hardcover
- Language English