After following John Jameson to Counter Earth, an alternate version of his own planet, Spider-Man's attempts to stop symbiote adversaries Venom and Carnage from boarding the shuttlecraft are met with failure. Blamed for Jameson losing contact with our Earth, Spider-Man becomes a target of persecution by the media and the public. Believed to be dead after saving a life in a fire, Peter Parker uses this shroud to embark on a mission to retrieve John Jameson on Counter-Earth. Making his way to the planet, Spider-Man learns that Jameson has fallen in with a band of freedom fighters opposed to the High Evolutionary, whose Beastials, hybrids of animal and humanoid attributes, are the dominant species whilst humans are the second-class minority.
With Jameson reluctant to return until the Evolutionary is defeated, Spider-Man elects to remain on Counter-Earth, blending in as best he can also as Peter Parker, and fighting Bestial versions of some of his greatest adversaries. It soon becomes clear also that Venom and Carnage are on Counter-Earth. This series also shows the animated version of Man-Wolf (John Jameson).
Beginning in the Fall 1999 with first three episodes airing, Spider-Man Unlimited was a critical and commercial flop, crushed by Pokemon. With the remaining episodes airing in 2000, Spider-Man Unlimited never received its full order of 26 episodes due to Marvel's bankruptcy, instead ending with a cliffhanger on episode 13.
