Not clear how Ginny could find Maggie so easily in Manhattan. Also, if Ginny can cross the Hudson in a coolbox, the Army wasted it's time blowing up those bridges and tunnels.In flashbacks, Negan and Ginny search for her missing toy. In the present, Ginny makes her way to Manhattan. The Croat holds Perlie prisoner in Madison Square Garden where he tests the marshal's abilities in a ring fight against walkers and questions his motives. Perlie reveals that he's in Manhattan hunting for Negan, much to the Croat's shock who in turn reveals that he had lost his family to cannibals near the start of the apocalypse. The tribespeople tell Maggie and Negan about the Burazi's operation which they recognize as a twisted version of the Saviours. Using the story of Negan's defeat by the Militia, Negan and Maggie inspire the tribespeople to help them. Tommaso reveals that he had managed to escape The Croat using the old framework of Penn Station and the subway system which they can use to get in. Maggie opens up to Negan about the loss of Hershel and her family and Negan in turn reveals that he had sent Annie and his son Joshua to safety in Missouri after killing five men who had robbed, beaten and raped Annie in revenge, which is why he's a wanted man. Luther discovers Negan's wanted poster, leading to a fight in which Negan gives in to his darker instincts and kills Luther. After finding Ginny's toy, Maggie contemplates burning it, secretly observed by Ginny.
Much more exposition in this about how everyone got to be where they are now, from where they were before. Definitely better than Those Who Live, but not a patch on Daryl Dixon.