Riven remembers the war. She wishes she didn't. The memories of it torment her relentlessly. She unexpectedly finds solace in Irelia after another terrible nightmare, but then Irelia starts to make her feel even worse than before. Irelia had become her source of pain and happiness, and the thought terrified her.

As a shocking death rocks the Institute Of War, the encroaching threats of The Void and Shadow Isles force an unsteady alliance of the League's greatest heroes.