The Galaxy Trio are summoned by Gravity Girl's father to help him defeat Gralik, whose ultra-gravitizer can destroy things from thousands of miles away.
The Galaxy Trio combines their superpowers to save the last ranger on Outpost A-15 from an indestructible spore monster which gives off a mysterious sleeping gas.
The last survivors of the planet Magnetron disguise themselves as the Galaxy Trio and rob other planets of their precious elements to build an army of exploding androids.