House of the Dragon is gearing up for a bloody battle between kin. The first season of the Game of Thrones prequel ended with Lucerys Velaryon's death at the hands of Aemond Targaryen, turning a war for the throne into a war for revenge. House of the Dragon Season 2's first teaser promises everything from dragon brawls to divisive murders, and readers of Fire & Blood will notice some Easter eggs in the mix.
Source:https://www.cbr.com/house-of-the-dragon-season-2-teaser-trailer-breakdown/