Complex sentence: Shortly after, Dragonstone fell to the forces of rebel Robert Baratheon, and Daenerys and her brother Viserys were smuggled away to Braavos where they spent the following years wandering the Free Cities looking for help to retake the Iron Throne of Westeros.
Split into simpler sentences: Shortly after, Dragonstone fell to the forces of rebel Robert Baratheon, and Daenerys and her brother Viserys were smuggled away to Braavos. They spent the following years wandering the Free Cities looking for help to retake the Iron Throne of Westeros.