The war is over. The Dragon is destroyed. The city is saved. But at what cost? Splinter is gone, the Turtles are in disarray, and the Shredder has returned. But all is not as it seems as the Turtles' most-feared enemy struggles with this new opportunity to regain his honor. Meanwhile, a nearly decimated Foot Clan belongs to Karai, but can she truly rise to the task in the shadow of its greatest warrior? And how does a newly-changed Leatherhead fit into a post-mutation NYC?