The second season of House of the Dragon has revamped Rhaenyra Targaryen's story, which means it will have more positive effects on the show's future.
Rhaenyra is one of the main characters in the prequel to Game of Thrones, starring two brilliant actresses playing her at different ages. After the shocking conclusion of the first season, she will play an important role in the future of the show.
It's worth noting that while she was important during the Dance of the Dragons, she wasn't as involved as the other characters according to George Martin's Fire and Blood, especially when the Targaryens' civil war really broke out.
If the original book is followed, she was not directly involved during the family civil war. Rhaenyra basically stayed on Dragonstone, playing a more passive role. However, with the preview of the second season of "Dragon Family", the story of the second season is the same as the first season, and some adaptations will be made to the original book, so that Rhaenyra will take the initiative to participate in the civil war more actively.
Judging by Fire and Blood, Rhaenyra's reason for staying on Dragonstone is simple, because she is the queen, so she can't throw herself into dangerous battles. And according to the descriptions of several bystanders in "Fire and Blood", it is very unfavorable for her.
However, in the trailer for the second season of Dragon Family, Rhaenyra leaves Dragonstone, which is a departure from the original timeline. She would go to the vicinity of Storm's End to find the body of her son Trail, which was supposed to be a touching storyline that added more depth to the character.
It is also clear that since Rhaenyra wants revenge, she will play a more central role in the war plan. Considering that the first season spent a lot of space on Rhaenyra and Alicent, it is conceivable that they will both actively participate in the second season.
Judging from the set photos of the second season of "Dragon Family", Rhaenyra will also appear in the Red Keep, and maybe she will have a head-to-head confrontation with Alicent, which will be welcomed by many viewers, because their relationship has always been at the core of this show.