Dimensions collide in this one-of-a-kind Teenage Mutant Ninja Turtles special, when '80s Shredder and Krang transport themselves to present-day New York. There they team up with Bebop and Rocksteady for the ultimate throwback throw-down against the Turtles. This four-episode collection not only brings back classic and villainous faces, but also takes fans back to where it all began - with a newly mutated Splinter on the run while protecting four baby mutant turtles.