The story follows the adventures of Aang, a young successor to a long line of Avatars, who must put his childhood ways aside and stop the Fire Nation from enslaving the Water, Earth and Air nations.
After supervillain Shredder escapes custody, he joins forces with mad scientist Baxter Stockman and two dimwitted henchmen, Bebop and Rocksteady, to unleash a diabolical plan to take over the world. As the Turtles prepare to take on Shredder and his new crew, they find themselves facing an even greater evil with similar intentions: the notorious Krang.
Enforcing the law within the notoriously rough Brownsville section of the city and especially within the Van Dyke housing projects is the NYPD's sixty-fifth precinct. Three police officers struggle with the sometimes fine line between right and wrong.
