The personalities of Shredder and Splinter are switched when a device is accidentally activated during a battle between the Turtles and their enemies. As Shredder plans the Turtles' demise and Splinter plans on how to get back to his body, everyone else is clueless.

A 14-year-old boy tries his best to help out the Turtles, but with some not so optimal results. In the end, he proves himself to be a great asset to the Turtle team.