You will Watch TMNT Season 3 Episode 1 online for free episodes with HQ / high quality. Stream cartoons TMNT Episode 53 Space Invaders, Part 1 The Earth goes under attack when the Triceratons mount a surprise invasion. Following an energy trail from the transmat device, Prime Leader Zanramon is convinced Professor Honeycutt resides on the planet and send his forces to apprehend all people thought to have been in contact with him. The Turtles try to evade capture, but come to the rescue of April and Casey when the two are taken captive and held at Central Park. The turtles manage to free the prisoners and are successful in saving April and Casey, but Donatello is captured by the Triceratons.