Strange things have been happening ever since Qibli and Winter have returned to Jade Mountain, and ever since Winter confessed to Moon, they've been getting worse. Memories have been leaving dragons, parts of their lives snatched away and toyed with. And Winter and Moon have linked it back to a single SkyWing. A mysterious gem that has the power to steal memories? Probable. Falling into the wrong talons? Imminent. As Qibli gets over being rejected and ignored, he, Winter, Moon and Umber must figure out where this powerful artifact came from, how to destroy it, and why Whirlwind would want to erase the world.