Jon Snow begins as the illegitimate son of Ned Stark, uncertain of his place in the world. His journey takes him beyond the Wall, where he rises through the ranks of the Night’s Watch, confronts the White Walkers, and ultimately discovers his true heritage as Aegon Targaryen. His arc is a testament to leadership, honor, and sacrifice, culminating in his heartbreaking decision to kill Daenerys Targaryen to save Westeros.