Leaving this review just to inform other curious watchers that this prologue is basically a few scenes that provide important context for some things that were just not explained well or at all in season 1. Unlike others I would not suggest waiting until after season 1 or season 2 to watch it, I think this is best watched as an actual prologue to the series before you even watch season 1 for the first time. It spoils nothing that happens in season 1; instead you will actually understand what is happening in season 1 with better context and the plot won't seem as randomlythrown together. If you've already seen season 1, don't hesitate to watch this before the 2nd & 3rd seasons.