"City at War," Part 3. The Turtles race against time to save one of their own, but beset by obstacles on all sides--including the Earth Protection Force and the tide of approaching battle between two warring ninja clans--will they be too late?

Who is Dr. Jasper Barlow, and is he friend or foe? As the TMNT regroup from their battle with the Punk Frogs, the doctor makes some of our heroes an offer they may find hard to refuse. Plus, a tense situation between the Utroms and Triceratons goes from bad to worse!

The Turtles struggle to recuperate in Northampton. Each Turtle deals with the new status quo in his own way, and each feels lost. But can they find their way to being a family again as the past haunts them?

Violence and carnage rage across the city as Shredder’s master plan unfolds. When tragedy strikes the Turtles, the brothers will have to hold the line against an attack from within, but with allegiances shifting they must formulate a plan to fight back against their deadliest enemy. Volume 3 collects issues #21–28 of the Teenage Mutant Ninja Turtles ongoing series and the Old Hob, Alopex, Karai, Hun, Bebop and Rocksteady, and Shredder Micro-Series one-shots, plus the 2012 Annual.

The IDW Collection presents the TMNT stories in recommended reading order. Recovering from the events of "City Fall," the Turtles seek sanctuary in the countryside, but questions remain unanswered and tension festers among the brothers. Meanwhile, in New York, Shredder tightens his grip on the city in their absence and Krang’s plan to destroy the Earth is ramping up, but Baxter Stockman has ideas of his own. Collects issues #29–37 of the Teenage Mutant Ninja Turtles ongoing series, Utrom Empire, and the 2014 Annual.

"City at War, Part 4." As the war for New York reaches a fever pitch, Splinter makes his final gambit for complete victory. Meanwhile, the Turtles are on the run and may not be able to count on each other for survival!