Watch the turtles defend the earth against the invasion of the Kraang in this latest action packed trailer for the season 2 finale! \r \r For more Teenage Mutant Ninja Turtles videos and content go to: \r \r Subscribe if you love Nickelodeon and want to see more! \r \r Welcome to the official channel for Nickelodeon! We have hilarious clips from Spongebob Squarepants, Teenage Mutant Ninja Turtles, Legend of Korra, Sam & Cat, Breadwinners, and all your favorites! Subscribe to see special behind the scenes videos, trailers, sneak peeks, and interviews. Be sure to visit nick.com for games, full episodes, online radio and more! \r \r More from Nickelodeon:\r Official Nickelodeon Website: \r Like Nickelodeon: \r Follow Nickelodeon: \r Nickelodeon Tumblr: \r Nickelodeon Instagram: