Since 1993, Earth has been protected by the mighty Power Rangers. When Zordon disappeared, he left Gosei in charge of protecting the Earth, who has been doing so with his robotic assistant Tensou. However, an evil organization of aliens known as the Warstar begin their descent to Earth in order to conquer it, Gosei responds to the emergency by calling upon six teenagers with attitude to form a new team of Power Rangers. Not only do they face off the Warstar but also a species of Toxic Beasts and a robotic army who wish to take Earth for themselves.
Later, the Mega Rangers gain an ally by the name of Robo Knight a powerful android created by Gosei who assists them in their battle against these adversaries.
