Two decades before the first episode takes place, a Targaryen prince kidnaps Lyanna Stark, the fiancée of Robert Baratheon and sister of Eddard Stark. After Eddard's father and brother are murdered by the Mad King Aerys while petitioning for her release, the Starks and the Baratheons rise up in rebellion against the Iron Throne. House Lannister joins the rebels late in the war, sacking King's Landing and killing the last Targaryen king and his family.