Once Captain of the Royal Guard, Supernova quits in a fit of rage. Calling Princess Celestia a power hungry bitch in the process while defending Princess Luna.

Supernova made sacrifices in the Guard that he can never take back, and the barracks were his only home and he left it all behind.

Now living in the streets, Princess Luna finds him while he is re-living one of the worst sacrifices he made saving Celestias life.