Everything is peaceful among the three Clans, NightClan, FrostClan, and EvergreenClan, until mysteriously, FrostClan disappears. They don't patrol their borders, and neither do they attend Gatherings. The leaders of NightClan and EvergreenClan grow anxious to what StarClan has planned for the cats of their land, and send patrols to unite and find FrostClan. Will they succeed?