After a ruthless warlord attacks the Hilltop community and abducts her son, Maggie Rhee turns to Negan for help infiltrating the old city of Manhattan – now a stronghold of the dead. But first Negan must evade a lawman who is hunting for him.
Maggie and Negan encounter a group of native New Yorkers, who have their own problems with a gang of marauders working for the Croat. Meanwhile young Ginny must adapt to a new community at Oceanside.
Negan and Maggie turn to their new allies for help as they form a strategy to get to the Croat, while Marshall Armstrong sees first-hand what kind of man the enemy is. Ginny sets out toward the city on her own.
Maggie and Negan attempt to draw out the Croat, though Negan is reluctant to revisit his history with the man. But Ginny's surprise arrival in the city complicates their plan.
While Maggie and the others attempt to escape through the methane-filled sewers, Negan finds himself in the custody of Marshall Armstrong. Meanwhile, the Croat reports to a mysterious ally.
Ginny's reunion with Negan injects new tension, casting suspicion on Maggie's true motives. While Ginny and Armstrong flee New York, Maggie and Negan's final push to find the Croat takes a surprising turn.
