Mesogog's lair was destroyed with Mesogog still inside but it's not time to celebrate yet. An enraged Zeltrax declares war on the rangers like never before and holds Elsa hostage. To make things worse, Cassidy and Devin know their true identities and intend to use it to their advantage. It'll take all that the rangers have to defeat him and end it once and for all and keep from being exposed for what they really are.