Warriors Cats Dawn of The Clans Prequel Book 1-6 Series 5 Books Collection Set By Erin Hunter(The Sun Trail, Thunder Rising, The First Battle, The Blazing Star, A Forest Divided & Path of Stars):

The Sun Trail:
Long before Firestar left his kittypet home to join ThunderClan, a band of cats from the mountains set off on a dangerous journey in search of a new home. . . .

Thunder Rising:
The mountain cats from the Tribe of Rushing Water 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.

The First Battle:
The rivalry between Gray Wing and Clear Sky has driven a bitter wedge between the forest cats. As Thunder and Gray Wing struggle to find a peaceful path for the future, tensions are growing.

The Blazing Star:
The first great battle has ended, and each group has agreed to a truce. But merely keeping the peace may not guarantee their survival. When a deadly disease threatens to strike deep into the heart of both camps, the cats must work together to find the only thing that can save them—the mysterious Blazing Star….

A Forest Divided:
The spirit-cats have spoken: to survive, the cats from the mountains must grow and spread like the Blazing Star. Clear Sky believes the only way to grow is to band together again, but few cats are willing to ally with him.

Path of Stars:
After moons of strife, the forest cats have settled into five camps. But now the dangerous rogue Slash has kidnapped Clear Sky's mate, Star Flower, and made demands for prey that the cats cannot afford to meet.