Warrior Cats: The New War

There used to be 5 clans in the forest - NightClan, MudClan, OceanClan, CloudClan and StrikeClan - but StrikeClan was slain by NightClan and MudClan - leaving only one survivor, known as the cat who lived, Mousewing, who was taken in by OceanClan, she just turned into a warrior, and is desperate to prove herself, whatever it takes.