Lars and the Past

Without giving anything away, Lars and his brother Taz come from the shadow clan, a clan that was completely destroyed by a twisted dragon who used mind control, killed the territory dragon and his mate, trapped clan members in the territory and set key people, nests and landmarks on fire, scorching the territory using the power stored in the ground, rendering it uninhabitable. Any survivors of the clan were looked at suspiciously because nobody knew who was responsible and those of the shadow clan were known to be mind manipulators.

Dragons in general are suspicious of anyone who survives a scorched territory. That is when a twisted dragon somehow breaks into the power stored in the planet and uses it against the clan. Coming from a scorched territory is never a good thing, but it is worse when people suspect you may know something, or should have known something.