When two grave robbers accidentally free the Pastmaster from his 800-year imprisonment, he steals his “Tome of Time” spellbook from the Megakat City Museum of History and attempts to change the metropolis back to the Dark Ages form he prefers.

Dr. Viper uses his latest monster, the Giant Bacteria, to lead an attack on Megakat Biochemical to get his hands on Katalyst 99. Anytime the monster is attacked, it divides in two, and quickly threatens the entire city.

Dark Kat steals the material for a homemade nuclear bomb to destroy Megakat City, and neither the SWAT Kats nor the Enforcers seem able to break through his defenses. The origin of the SWAT Kats is revealed in a flashback.

Dr. Viper seizes control of Megakat Tower with his army of monstrous, acid-spitting “plantimals.” He places a huge “spore pod” on top of the penthouse and when it explodes, it’ll cover Megakat City with spores, turning the metropolis into the “Megaswamp City” of Viper’s fantasies.

Gangsters Mac and Molly Mange are brought back from the dead as robots and seek their revenge against their former mob associates and Mayor Manx, who they believe denied their parole.

Caught in one of the Pastmaster’s time vortexes, the SWAT Kats are drawn back to the Dark Ages. They find the wretched warlock invading “Megalith City” with an army of magical monsters, threatening to destroy the town unless its leader, Queen Callista, agrees to marry him.

Dark Kat enlists Hard Drive to help him destroy both the SWAT Kats and their reputation; after the villains lure the pilots into a conveyor belt death trap, Hard Drive uses the stolen Turbokat to pose as the SWAT Kats and frame them as criminals.

An accident with an experimental diamond mining machine somehow transforms brutal convict Rex Shard  into a crystalline giant whose touch turns people and objects into crystal.

The vengeful spirit of The Red Lynx, an enemy air ace from “Megawar II,” returns from his watery grave to kill the descendant of the flier who put him there, The Blue Manx. That descendant happens to be Mayor Manx, the flier’s great-grandson.

The Metallikats escape from their creator Professor Hackle. In search of their armored hovercraft, the Metallikat Express, Mac and Molly wind up at the salvage yard near Jake and Chance’s Garage , where they discover SWAT Kats headquarters.

Cicada-like aliens take over MASA Space Center, turning scientist Harley Street and others into literally bug-eyed slaves as part of their plan for world conquest.

Insane comedian Lenny Ringtail, whose mind snapped when he was turned down by The David Litterbin Show, lets himself be possessed by the vengeful ghost of a medieval court jester who suffered a similar rejection hundreds of years ago.

Dark Kat, Dr. Viper and The Metallikats form “an invincible alliance of evil” with only one goal: “Destroy the SWAT Kats!”

Dr. Viper floods Megakat City with a “hideous mutating ooze” that transmogrifies ordinary animals into  giant monsters. With the city submerged in slime and infested by huge, repulsive creatures, the SWAT Kats undertake the perilous mission of reaching Megakat Biochemical Labs.

The Pastmaster sends T-Bone and Razor to Megakat City’s near future , a nightmare world where The Metallikats rule as fascist dictators, killer robots confine “non-metallic creatures” to slave labor camps.

The SWAT Kats and the Enforcers defend their homeworld against the water-stealing  Mutilor by engaging the aliens in an epic battle that begins over Megakat City.

Razor’s self-confidence is shattered when he believes that he injured two elderly civilians during a battle. He becomes discouraged enough to quit the SWAT Kats, leaving T-Bone to face Dark Kat’s latest evil plot alone.

Turmoil attempts to ransom the skies of Megakat City with a powerful airship, a squadron of female fighter pilots and the disorienting “vertigo beam.” When T-Bone withstands these obstacles, Turmoil offers him a job as her flight commander, but first he must prove his loyalty by killing Razor.

Hard Drive uses a stolen “anti-weapons scrambler” to deactivate the Turbokat’s weapon systems.

Giant Mummies controlled by the Pastmaster are unearthed them from “the lost pyramid of Katchu-Picchu” as part of his latest attempt to take over Megakat City.

When the SWAT Kats, Felina Feral and Ann Gora search for some missing miners in the caverns beneath Megakat City, they soon find the cause of the disappearances: rock scorpions who have been mutated into gigantic, kat-eating monsters.

Mayor Manx and Mr. Young plan to build an industrial park on Anakata Island, the SWAT Kats equivalent to Hawaii. During construction, the ancient “fire demon” Volcanus is accidentally freed from his volcano prison.

Dr. Zyme and his partner Dr. Elrod Purvis co-develop Viper Mutagen 368. While attempting to steal the chemical, Purvis spills it on himself and seems to die, but the flawed formula causes him to revive as Dr. Viper.

T-Bone and Razor enter a parallel dimension where evil counterparts of the SWAT Kats and Callie Briggs are conspiring with Dark Kat to blow up Enforcer headquarters.

When the injured Metallikats use an experimental tool to repair themselves, the device is “contaminated with their criminal personalities.” It refers to itself as Zed and begins absorbing other machines, builds an ever-growing armored body around itself and seeks world domination.

Hanna-Barbera hired an outside producer to make this clips compilation, which was meant to promote the beginning of SWAT Kats’ second season but didn’t air until months after it was completed.