Thundercats face more and more difficulties. In their hour of testing, ThunderClan is once again convinced that their leader Firestar is the most noble, kind and wise cat in the world. ShadowClan succumbs to Sol's charms and changes their attitude to the Warrior Law. Hollyleaf, Lionblaze and Jaypaw are trying to figure out how to save their neighbors from influence strange cat Quite by accident, Firestar’s grandchildren discover secrets of the past that can destroy their usual life.