Zordon calls on the Alien Rangers to help defend the Earth after the Power Rangers are made helpless.

Alien Rangers defends the Earth against Master Vile and his army of monsters.

Billy and the young Rangers devise a scheme to outsmart the monsters.

Billy and the young Rangers attempt to free the Alien Rangers from a toxic lake.

Rita and Zedd turn Bulk into the Brat Boy monster.

The young Rangers search for their pieces of the Zeo Crystal to recover their powers.

In the distant past, Adam searches across Korea for his Zeo Crystal.

Tommy and Katherine continue their search for their individual Zeo Crystals.

Zedd and Rita send the Hydro Hog to Earth to suck up all the water.

Aisha faces a difficult decision in her Zeo Quest while the Alien Rangers battle Hydro Hog.