Former mercenary mutant hunter Dirk Savage returns, but this time he's on the side of the angels! Now working for the Daring Undercover Department of Espionage (aka D.U.D.E.), Savage needs the Turtles' help to foil an evil plan to destroy the only surfing beach in New York City. But Michelangelo, Raphael, and Leonardo are under the weather, leaving only Donatello to become an agent of D.U.D.E.! Can he help Dirk stop the mad mastermind Dr. Bro before it's too late? Of course he can!And once you've picked up the latest issue of TEENAGE MUTANT NINJA TURTLES: SATURDAY MORNING ADVENTURES, you'll know how! Be there!