Power Rangers season 20

what happens

For centuries, the earth has been protected by a supernatural guardian named Gosei and his robotic aide, Tensou. When the evil Warstar aliens plan a massive invasion of Earth, Gosei calls upon five teenagers with talent and attitude to form the ultimate team…the Power Rangers Megaforce! Using their newfound special abilities, mega-weapons, high-tech Zords and giant Megazords to battle this new alien threat, the Power Rangers Megaforce prove that “Earth's defenders never surrender!” Go Go Megaforce!