Your goal here (although there is no quest) is to find Ygerna's soul, to enter her memories and prevent her from being executed, ensuring Damian's death. Once inside, you find yourself in dragon form, battling Memory Eaters and perhaps destroying some Nest Dias(es), until you reach an orb portal. You'll fight the following: If you have Divinity II: Flames of Vengeance, your journey is not yet over.