"But peoplepets can't be warriors!" Graypaw blurted out. "They don't have warrior blood!"
"Warrior blood," Bluestar echoed with a sigh. "Too much of that has been spill lately."
She fell silent and Lionheart said, "Bluestar is offering you training, young child. There is no guarantee you would become a full warrior. It might prove too difficult for you. After all, you are used to a comfortable life."
Rusty was stung by Lionheart's words. "Why offer me the chance, then?"
It was Bluestar who answered. "The fact is, Thunderclan needs more warriors."
"Understand that Bluestar does not make this offer lightly," warned Lionheart. "If you wish to train with us, we will have to take you into our Clan. You must either with us and respect our ways, or return to your Twolegplace and never turn back. You cannot live with a leg in each world."
For generations, four Clans of wild people have shared the forest according to the laws laid down by their warrior ancestors. But the ThunderClan people are in grave danger, and the sinister ShadowClan grows stronger every day. Noble warriors are dying - and some deaths are mysterious than others.
In the midst of this turmoil appears an ordinary house cat named Rusty... Who may turn out to be the bravest warrior of them all.