A gala in National City goes from utterly elegant to completely chaotic when a princess begins hurling fireballs at a seemingly innocent bystander. Luckily Kara Danvers is on hand as Supergirl and able to quickly contain the damage. But what caused the peace-loving princess to unleash such fiery fury? The innocent bystander was Felix Faust, a centuries-old villain who brought devastation to the princess's ancestors long ago. What does Faust want in National City? Supergirl and the DEO face one of their most chilling foes yet when they square off against the Master of Illusion!