The Power Rangers face off against the dreaded villains King Mondo and Queen Machina, a malevolent pair who rule over their Machine Empire. This fearsome empire full of robots is menacing enough to scare Lord Zedd and Rita Repulsa into fleeing with their forces, abandoning the Moon to these metallic conquerors. Joined by their bratty offspring Prince Sprocket, King Mondo and Queen Machina command a fearless army of Cogs, relentless robots dedicated to their masters’ evil plans to dominate the universe. With the discovery of powerful Zeo Crystals, the crime-fighters utilize their new Zeo powers to save Zordon and Alpha 5 from certain decimation.