This is the plotty. This takes place in a partial alternate universe. Meaning? That the characters from the book don't/didn't/won't exist. StarClan exists, though. Of course.

The Clans had been enjoying an unusual time of peace and prosperity, where the Clans hadn't been fighting over territory, and every cat was content. Then RiverClan's leader died. The deputy died also, under mysterious circumstances, and a new cat rose to power. This new leader was named Miststar. Little is known about him, and his deputy always arrived at the Gatherings. Some say the RiverClanners have never seen their leader. Then, RiverClan declared war on their long-time rival:ThunderClan. WindClan sided with RiverClan, and ShadowClan sided with ThunderClan, for their rivalry had passed long ago. This sparked the World War I of the Clans. Now, cats are dying in battle every day, and no-one knows when the madness will stop. The medicine cats have recieved no messages from StarClan, and it has been long since a cat journeyed to the Moonstone. ThunderClan and ShadowClan are overwhelmed, and need to share tongues with StarClan to find out what to do. But how is that possible, with enemy WindClan not allowing them through their territory?