New characters, new attitude, and a new age of mutant madness continues in this graphic novel based on the Nickelodeon animated series. Join Raph, Leo, Donnie, Mikey, and April O'Neil in this exciting and hilarious adventure with an important message about learning to be comfortable speaking up. A new batch of mutant villains are in town and they've mastered the art of noiseless theft! The TMNT are powerless to stop them until they realize someone close to them shares a history with the bad guys

Leonardo, Raphael, Donatello, and Michelangelo get to know their powers and their special weapons and learn to work together as a team as they and their friend, April, battle their enemies.

"Join the legendary heroes Raph, Leo, Donnie, and Mikey as these brothers discover the Hidden City beneath New York, learn amazing mystic ninja skills, battle absurd mutants...and always find time for a slice of their favorite pizza! Will the TMNT be able to master their new world, or will their new world master them?"--Provided by publisher.