The Turtles come face-to-face with a territorial new group: the Punk Frogs! As the two sides battle across Mutant Town, fresh and familiar enemies make their own devious moves. The Utroms and Triceratons have returned, and their tensions are at a breaking point! Plus, a strange doctor approaches the Turtles with an offer they can't easily refuse. Then, get ready for the Armageddon Game in the prelude stories OpeningMoves and the 2021 Annual, "The King's Gambit." For millennia, the Pantheon family have played a deadly chess game with humanity in their twisted pursuit of victory. But now, the Rat King sees the opportunity to end the eternal contest once and for all! Volume 16 includes Teenage Mutant Ninja Turtles issues #125-132, the 2021 and 2022 Annual, and The Armageddon Game: Opening Moves #1-2.more