A warrior and a scholar travel to Valyria on the eve of a wedding between two of the most powerful Valyrians; however, it turns out the bride and groom are siblings.

400 years before the events of Game of Thrones, The Valyrian Freehold was the most dominant world power. That was until the 14 volcanoes that surrounded it, engulfed it in flames. Doom of Valyria is the story of what was going on in Valyria in the weeks leading up to its ultimate destruction, and delving into the idea that perhaps Valyria was already doomed before it physically came crumbling down.