The mountain cats followed the sun trail to a new territory, convinced that in a land with more prey, their lives would be free from strife. But while no cat has gone hungry, tensions are rising -- and the once firmly united group has split in two. Caught in the middle is a young cat named Thunder. Orphaned after his father, Clear Sky, rejected him, Thunder has thrived under Gray Wing's watchful eye. But Thunder cannot escape the memory or hurt of...

The rivalries that have plagued the cats for moons are growing stronger. Gray Wing still believes there is a way for both groups to live in peace, while Clear Sky insists that harsh rules and divided territories are the only hope for the future. What started as a misunderstanding between two brothers has spread far and wide - and now, every mountain cat, rogue, and kittypet who settles in the forest will be forced to pick a side.

A new era dawns in the forest... After moons of deliberation and strife, the forest cats have settled into five camps, following the spirit cats' advice to spread out like the petals of the Blazing Star. But now the dangerous rogue Slash has kidnapped Star Flower and made demands for prey that the forest cats cannot afford to meet. Clear Sky is desperate to save his mate and the kits she carries, but he cannot do it alone. To have any hope of defeating...