The Ember Grove incident is a moment that will forever go down in history as a great and horribly tragedy. It is the greatest scar Taylor has on his life, and while he has come a long way, it is something he will never be able to truly forgive himself for.
What began as an accident in the horse shed, lead to the powers of Taylor's Elemental line awakening from their dormant state, and ended with the complete incineration of everything and everyone Taylor ever knew.
The only survivors were Taylor, Pierce, their parents, and their older brother Reggie. This left the twins, especially Taylor, so traumatized and damaged, that their father used memory magic to bury the memories of that night deep within their subconcious.