Baxter Stockman, a mad scientist, is showing an exterminator his new invention a rat catching robot called Mousers.
The exterminator rejects Stockman's offer however shredder decides to buy his inventions. He unleashes a dozen mousers in the sewers they are easily defeated by splinter but is no match for 1200 the turtles track to the one responsible for the mechanical rats to his hide out while there Michelangelo encounters Krang.
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