Cowabunga dudes! After a 14-year absence, Leonardo, Donatello, Raphael and Michelangelo are back.

Cowabunga dudes! After a 14-year absence, Leonardo, Donatello, Raphael and Michelangelo are back.

Kevin Munroe's computer-animated adventure is the fourth in the TMNT movie franchise.

After the defeat of their old arch nemesis, Shredder, the turtles have grown apart as a family.

Struggling to keep them together, their rat sensei, Master Splinter, becomes worried when strange things begin to brew in New York City.

Tech-industrialist Max Winters is amassing an army of ancient monsters to apparently take over the world.

Among the voices you can hear are Patrick Stewart as Max and Sarah Michelle Gellar as April O'Neil.

Splinter is voiced by the late Mako - whose involvement in the movie was announced last summer, just one day before he died of cancer.