Three new international TV spots for Jonathan Liebesman's sci-fi reboot Teenage Mutant Ninja Turtles have been revealed. The brothers jam in an elevator before taking on one of their most fearsome foes, Shredder, in this latest look. We also get to watch them use one of their best known catchphrases "Cowabunga!" as the battle begins. Check them out.

The city needs heroes. Darkness has settled over New York City as Shredder and his evil Foot Clan have an iron grip on everything from the police to the politicians. The future is grim until four unlikely outcast brothers rise from the sewers and discover their destiny as Teenage Mutant Ninja Turtles. The Turtles must work with fearless reporter April and her wise-cracking cameraman Vern Fenwick to save the city and unravel Shredder's diabolical plan.