As the Turtles and April investigate the streets for the thieves' origins, they discover a group of robot ninjas whose uniform Splinter recognizes as belonging to the Foot Clan.
Foot Clan leader Oroku Saki, the Shredder decides, along with his partner Krang from Dimension X to turn two thugs into mutant henchmen using the mutagen that created Splinter and the TMNT.
The Shredder hires the scientist Baxter Stockman, because his invention, rat-seeking robots named Mousers, can help him find Splinter.
The turtles befriend the teens, but before long the two stone warriors set up a special weather making device that causes trouble.
The footage from this season was taken from a third-season clip show called Blast From The Past, and this was amalgamated with various series 2 episodes.
The five episodes were later adapted into the first three issue miniseries of Teenage Mutant Ninja Turtles Adventures by Archie Comics under the name Heroes in a Half-Shell.