Aegon didn’t want the crown. The Iron Throne. The duties. None of it.

So after his father’s death, Aegon tried to flee. A search party began, and eventually some White Cloaks found Aegon hiding in the sept.

After putting on a fight, he eventually gave up. “I want my sister!” He just drunkenly barked at one of the Kingsguards until he was dragged to his older sister’s bedchambers, where they left him to guard the door from the outside.