Through contact with a mysterious substance, called Ooze, 4 little turtles in New York Sewer turn to giant turtles. They can talk, walk upright pizza and love. Wise rat Splinter becomes their mentor and educate them to Ninja fighters. Their arch-enemy is the bad, bad guy Shredder, who struggles to gain power in the world. Of course the ninja turtles will do everything to stop him.