Unfulfilled Prophecy

"There will be a cat of your kin, who will battle the threat with powers never seen before." That's the prophecy that Wavepaw's supposed to live up to. Given to his parents moons before his birth, he's destined for greatness. Trouble is, he doesn't seem to be. He can't hunt and he can't fight. How is the worst apprentice in Splashclan supposed to defeat this unknown evil?