An all-new series that explores characters and story-lines that are pivotal to the IDW TMNT universe! When a mysterious new mutant targets Baxter Stockman, it will be up to the TMNT to reluctantly save him. Little does everyone know that a larger trap is being laid by a new arch-foe! Plus a back-up story from TMNT co-creator Kevin Eastman and comics legend Bill Sienkiewicz! Collects: Teenage Mutant Ninja Turtles Universe #1–5.