After winning the wild pegasus mare named Echofrost in a contest, Rahkki Stormrunner becomes an official Rider in the Sky Guard army. But Rahkki is terrified of heights, and Echofrost is still difficult to tame. And with Echofrosts herd captured by the giants and the growing threat of battle looming over the Realm, the new pair will have to work through their fears in order to fly with the army and free the herd.
Meanwhile, back in Rahkkis village, rebellion is brewing, and Rahkki learns there is a sinister plot to overthrow Queen Lilliam. But the queen suspects Rahkkis behind it, and he is under intense watch.
As Rahkki and Echofrost travel to Mount Crim to free Storm Herd, Rahkki fears that the greatest danger may not come from the impending battle against the giants, but from within his own clan.
