When a giant glacier appears out of nowhere and plunges Acmetropolis into a new ice age, the Loonatics must find a way to stop it before the whole city freezes over. After numerous attempts to melt it, Ace realizes Slam's magma tornado will do the trick.
Just when Duck swears off all technology, Acmetropolis comes under attack from a villainess named Black Velvet. Determined to bring darkness to the entire planet, Black Velvet has stolen some high-tech inventions to fulfill her plan.
An ambitious TV news assistant is struck by lightning and transforms into the delicious and evil Weather Vane. Her first order of business is to blow her boss and arch nemesis, the bitchy weather reporter Amber Waves, sky high.
Sections of Acmetropolis are literally being turned upside down when a crazed geologist who lives beneath the planet's crust is determined to turn the world "inside out" to create a new home for himself and his boulder beasts.
After a freak meteor shower interrupts an award ceremony on the anniversary of the first meteor hit in Acmetropolis, our heroes discover that another meteor, five hundred times the size of the first one, is heading straight for them.
An evil ringmaster develops a technology to transform humans into a wide variety of hybrid creatures for his traveling space circus. One of the animals, a monkey-lizard hybrid escapes and tries to warn the Loonatics.
Four villains who have battled the Loonatics in the past miraculously escape during a prison transfer right under Duck's nose. They're transferred to a planetoid in space where they meet their liberator Optimatus.
In Part Two, Zadavia tells Ace and the team that she and her brother Optimatus are from another world and have different ideas about ruling it. She was banished by her brother and found a new home in Acmetropolis.