Using both sides of the moral compass as the stage. Evil and Good. Dark and Light. Different sides of the same coin. With the Blood War behind them the Wizarding World believes that it can breathe easy, but this so called peace will be shaken when they learn that defeated does not mean destroyed. A War of Blood. A War of Titans. A War for The World.
The duel between Dumbledore and Grindelwald was the lynch pin in how the wizarding world would progress. Dumbledore made a fatal error and lost. Grindelwald began his conquest and gained most of Europe. The muggles in his domain suffer, the muggleborn only slightly above them in the hierarchy. Interment Camps filled with muggles all over his domain. Unaware he had created his bane