Enter to Win a Set of Ninja Turtles Half-Shell Heroes

This Sunday on Nickelodeon, the Teenage Mutant Ninja Turtles are going back in time. Well, at least their Half-Shell Hero versions are anyway. The new animated special, Half-Shell Heroes: Blast to the Past, takes our ninja buddies to the prehistoric era, where they'll have to stop an alien race from altering the future of the planet.

In addition to this animated special, there will also be some action figures based on the adventure. It just so happens, we've got a few sets to give away.

Courtesy of Nickelodeon and Playmates, we have two full sets of TMNT Half-Shell Heroes and their dinosaur counterparts to award our lucky readers. Included in the set are all four Turtles in their historic clothing, including Michelangelo in clothing taken from what appears to be a sabretooth tiger. The less we think about just how he go those clothes, the better.

Raph, Leo and Donnie are also donning some caveman-esque garb and weaponry, though Leo's snake belt might take the prize for best accessorization. Each of the figures comes with an accompanying dinosaur, including a T-Rex, triceratops, brachiosaurus and a pterandon, each with their own color scheme based on their Ninja Turtle partner.

The contest will run from today through Monday, Nov. 23 at 12:01AM EST. Be sure to check the official rules before entering. The contest is open to all residents of the US, and the prizes will be fulfilled through Nickelodeon.

Check Out An Exclusive Clip From Half-Shell Heroes:

Think You Know the Turtles? Here Are Some Facts You May Not Know