The shredder and Hun are not getting along anymore; Hun has failed him one time to many. But now he has a chance to redeem himself, he must save karai (who save stupidly captured trying to steal an alien microchip from the United States government. He isn’t to happy (because the two are rivals) but he is determined not to fail but the brilliant Baxter stockman has alerted the turtles of Huns plan and they must stop him, they track him down and find him fighting the shady and also crazy agent bishop. Bishop is about to finish him of when the turtles drop in, after freeing karai the six outnumber the agent. And he flees with the head of the train car. Karai thanks the turtles and disappears.
The shredder rewards Hun and finds out about stockman’s attempted sabotage, and punishes him severely.