The Rangers finally battle the evil Prince Vekar face-to-face when he comes to Earth armed with his very own Megazord. They then find themselves face-to-face with Vrak, who returns with a new plan to destroy the world and a new robot he has programmed to fight against the Rangers: Robo Knight! When Emperor Mavro arrives, the Red Ranger is captured and used as a bargaining chip in an effort to convince the Earth to surrender to the Armada. When the other Rangers are injured, it's up to Jake and Tensou to save their fearless leader. Just when the Rangers thought they'd saved the planet, the Emperor reveals himself and launches a massive attack on Earth. But against all the odds, the Rangers remain defiant and are rewarded with the help of all the Legendary Rangers from years past. The final 7 super action-packed episodes in the Power Rangers Super Megaforce season.