The Rangers must come to terms with the revelation that their most ardent foe, Koragg, is actually Udonna's noble warrior husband, Leanbow. They won't have long to do so, as the Master of the Underworld is finally rising, and in doing so, reverts Leanbow to the Knight Wolf. Without their Legendary Warrior powers, hope seems lost for our heroes. But will the truth about Nick's past help provide the key to victory? Plus, the final showdown between friends turned enemies, Imperious and Daggeron! (thetvdb.com)