Dr. Viper floods Megakat City with Katalyst X-63, an experimental formula that mutates any living thing it touches into grotesque, menacing versions of themselves.

The SWAT Kats are sent through a time portal.

An enormous spaceship arrives to steal the planet's water supply to sell to water-dependent aliens.

Razor quits the team, leaving T-Bone to fight alone.

Turmoil, a new female villain takes control of the skies.

Hard Drive deactivates the Turbokat's weapons.

The Pastmaster brings to life an army of mummy warriors.

The SWAT Kats go underground in order to rescue five miners who have disappeared.

The SWAT Kats must battle the awakened demon, Volcanus.

Dr. Elrod Purvis is mutated into the evil Dr. Viper.

The SWAT Kats enter an alternate universe where evil versions of themselves are wanted.

The SWAT Kats and Commander Feral fight to stop the Metallikats from robbing Megakat Dollar.