Synopsis
A string of space incidents is revealed to be caused by the Armanoid aliens, whose goal is to take over Earth. Professor Tachibana assembles a team at the Future Science Invention Center and readies five cutting-edge vehicles for Shin, Go, Lisa, and Captain Kenmotsu. Three of the Tester machines merge into the colossal Zero Tester robot, which manages to repel the Armanoid invasion over 39 episodes. The remaining portion of the series, renamed ZT: Save the Earth! (Chikyu o Mamotte!), was directed at a younger audience and involved an assault by the new Gallos aliens.
