The Gold Ranger requires a new host for his powers, and the Zeo Rangers are thrilled to learn that an old friend has been chosen to bear this honor. But will even he be enough to stop King Mondo's new line of invincible monsters?

Rita and Zedd send a remote-controlled robotic monster named Louie Kaboom to take over as leader of the Machine Empire. But when Rito and Goldar lose the remote, Louie strikes out on his own and takes King Mondo's place for his own personal schemes. Meanwhile, Ernie opens a new beach club cafe, which is soon under attack from a group of biker punks. Jason befriends the main bully's misunderstood girlfriend, Emily, whose necklace gets turned into Louie's first monster, Tough Tusks.