When renowned Space Ranger Sonic The Hedgehog loses his partner Scourge The Hedgehog in a confrontation with Dr Ivo Robotnik AKA Eggman, he vows to never have another partner again. Unfortunately, when Dr. Eggman invades the Planet of the Little Green Men and takes control of their Uni-Mind, Buzz is forced to act. Aided by the unlikely combined efforts of kryptonian Kara Danvers AKA Supergirl, the kung fu fighting panda Po, and the young Autobot Bumblebee, the four must thwart Eggman's plan to enslave every free mind in the galaxy before it's too late.