The classic 1980s animated Teenage Mutant Ninja Turtles are back! The four brothers are returning in their original TV incarnation for a very special episode of the current Nickelodeon CGI-animated series titled Trans-Dimensional Turtles. And that's not the only big surprise this exciting crossover has in store.

The Teenage Mutant Ninja Turtles seen on Nickelodeon's current series will travel into the 80s Turtles' alternate dimension in order to defeat the Krang from that era. And the original TMNT crew will be heading to current times to take down Krang Sub-Prime. If that wasn't awesome enough, the Turtles will also be traveling to a third dimension where another crazy surprise awaits.

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Yes, we'll also be seeing the Teenage Mutant Ninja Turtles as they appeared in Kevin Eastman's Mirage Studios comic book series. If that's not enough to get you excited, then perhaps the first clip from this upcoming animated adventure will do the trick. Here, we get to see the modern CGI turtles in the 80s animated universe, and we also get to see them return to New York City, where they meet their two dimensional doppelgängers. Of course, stranded in modern day NYC, the old gang just wants to get some 3D pizza. But they are quickly halted by their other selves, who inform their new friends that real ninjas live in the shadows.

In this episode, the original 1988 Teenage Mutant Ninja Turtles voice cast will be back to play their formally two-dimensional selves. Townsend Coleman, Cam Clarke and Barry Gordon will all be heard alongside their contemporary counterparts Sean Astin, Greg Cipes and Seth Green. Rob Paulsen will be pulling double-duty, as he played Raphael in the 80s, and now plays Donatello three decades later.

It isn't known if we'll get to see the Kevin Eastman inspired turtles before this episode airs Sunday, March 27 at 11:00 am on Nickelodeon. But we'll be sure to keep you updated, as this is truly an event fans don't want to miss. You can get your first sneak peek in this clip below courtesy of IGN. What do you think? Coolest thing ever? Or does pizza still hold that distinction?