When lightning strikes an overly jealous girl who wanted to be a weather personality, she becomes Weathervane, a being with the power to control weather, and bring forth chaos on Acmetropolis! It's up to the Loonatics to stop her before she destroys Acmetropolis with her "rain" of terror!

A new villain named Massive uses his ability to control gravity to commit several robberies all over Acmetropolis.

Landing on the island of Apocalypso, the Loonatics find a colony of beautiful, powerful women called the Apocazons led by Queen Athena. Queen Athena was impressed by Lexi's behavior towards Duck, and invites her to join them in a very special event. However, not all is as it really seems with the Apocazons.