The Yeerks plan to use the Helmacron ship they have repaired to capture the Andalites and track down Elfangor's blue cube--the cube that gives Cassie, and the other animorphs the ability to morph.
- ISBN10 0439106788
- ISBN13 9780439106788
- Publish Date 1 March 2000
- Publish Status Out of Stock
- Publish Country US
- Imprint Scholastic US
- Format Paperback
- Pages 121
- Language English