A new age begins for the Turtles as the epic events of the past have created new opportunities for the future—but new dangers as well. While the Turtles adjust to a world leading the Foot Clan post-Shredder, they return to the Technodrome to monitor the revival of the Utroms on Burnow Island and are surprised to meet a new mutant—Leatherhead! Plus, Kitsune still poses a threat, and a new group, the Street Phantoms, enters the fray! Collects issues #51–64 of the Teenage Mutant Ninja Turtles ongoing series.