An affectionate, cuddly creature from another world shows up on Earth, with the ability to move objects by mental power. It turns out to be an escaped pet of the Neutrinos. The Neutrinos - Dask, Kala and Zak are in search of Kala's pet Grybyx. As it turns out, the small and cuddly creature can turn into a humongous monster. This transformation occurs when it gets fed pizza, and soon enough the gigantic Grybyx-creature threatens the Turtles and the city. Of course, Shredder and Krang want the Grybyx, but they end up getting more than they bargained for. After transforming back into its old self, the Neutrinos return the once-again cuddly little creature to their dimension.
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