Deep in the sewers of New York City, four mutant turtle brothers lurk. Leonardo, Raphael, Donatello, and Michelangelo are in their early teen years, and the brothers go on new and exciting adventures. They tap into their mystic ninja powers to learn to work together as a cohesive unit and become a team of heroes as they navigate the modern world and other hidden realms. The brothers get a whole new look, new weapons, and new powers as they discover the hidden city beneath New York and find time for a slice of their favorite pizza. In the first season, the turtle brothers, along with their friend April O’Neil, meet an evil alchemist named Baron Draxum, and the dangerous Foot Clan. They also learn of their Master Splinter's secret: that he was once martial arts expert, and movie star, Lou Jitsu. They must collect pieces of an ancient dark armor to prevent the Foot Clan and Draxum from resurrecting the Shredder, a demon once banished by Splinter's ancestors. In the second season, the brothers face new and old enemies, most notably the evil Shredder, and must stop him from destroying all of New York City.