The original series is a group of six books written by Erin Hunter, following young house cat Rusty, as he turns into a feral cat and saves the forest. This series inspired follow-on arcs in the Warriors Saga. The books are Into the Wild, Fire and Ice, Forest of Secrets, Rising Storm, A Dangerous Path and The Darkest Hour. The main character is a young house cat who joins ThunderClan and becomes an apprentice with a new name (Firepaw). He is faced with friend troubles, prejudice, love, battle, and a prophecy that he must fulfill. Once he grows into Fireheart, legendary warrior of the forest, he must carry out his destiny: Fire alone can save our Clan. There is mild violence, but 7-9 year olds can feel comfortable reading this arc.