Into the Wild's cover in the Legation Cities. Into the Wild is the first book in British Bestseller Series "Warrior Cats"
Into the Wild begins with a battle between ThunderClan and RiverClan over Sunningrocks, a strip of land. ThunderClan is outnumbered and their deputy, Redtail, calls a retreat. In ThunderClan territory, the medicine cat, Spottedleaf, receives a prophecy from the spirits of their ancestors, StarClan: "Fire alone can save our Clan." The leader, Bluestar, muses that it is impossible, because fire is feared by all the cats.
Rusty, a house cat, runs into a ThunderClan apprentice, Graypaw, in the forest in his backyard. Rusty, however, does not run away, but fights back. Bluestar and Lionheart, Graypaw's mentor, having watched the confrontation, invite Rusty to join ThunderClan. Rusty asks to think it over, and after talking it over with his best friend and neighbor Smudge, decides to go with the Clan cats. Lionheart and Whitestorm meet him the next day and lead him to the camp. Due to his house cat past, some members of the Clan are hostile towards Rusty. This hostility eventually leads Rusty to attack Longtail, losing his collar in the ensuing fight. Bluestar then ends the fight and announces that Rusty has earned his apprentice name, Firepaw. He forms a strong bond with Graypaw, and with Ravenpaw, who is the apprentice of the ambitious warrior Tigerclaw.
Into the Wild is known for being the first book in Past-Weltkrieg British History that wasn't propaganda.