Shane and Rick have a disagreement whether to stay or leave, and Rick feels the group needs more guns. Rick and Glenn make a trip into the city limits to get more guns, but not without trouble. Lori is keeping a secret from Rick.
Lori's pregnancy stirs the group. Dale has speculations over the father. The survivors find a potential safe-haven, Wiltshire Estates, but they fail to see a sign at the entrance warning "All Dead Do Not Enter".
The Hilltop Colony residents are shocked about the murder of Ethan. Paul starts to explain the situation regarding 'The Saviors', who keep the area clean from zombies but require half of Hilltops supplies as payment. Everyone agrees that Rick's group is able to defeat them. On the way to the Safe-Zone Rick states they can finally start living.
Rick's group encounter members of The Saviors, and after dealing with most of them Rick tells the last one to pass a message on to Negan. Maggie reveals she's pregnant. Abraham and Eugene slip outside in hopes that they can restore their ammunition not knowing they are watched by a group of men.
Rick tells everyone Negan is now in charge. Carl hides in The Saviors' van, and kills several of them after he is discovered. He is stopped violently by Dwight until Negan tells him to stop and asks "is that any way to treat their new guest?".
Survivors bring their forces together at The Kingdom. Negan arrives at Alexandria to collect the offering. He is approached by Spencer, who wants him to kill Rick and appoint him leader of the Safe-Zone. Negan dislikes his lack of courage and kills him.
Two years after the events of "All Out War", the survivors have gotten more into building their society, and finally started living their lives. Carl reveals to Negan, now a prisoner, that he still wants him dead.
Andrea questions Magna, while Rick allows Carl to become an apprentice. Two Hilltop residents struggle outside the communities, and Magna assures her group they'll find out what Alexandria is hiding from them.
Jesus manages to survive his encounter with The Whisperers and brings back a captured female member to the Hilltop. Meanwhile, Carl protects Sophia from a group of bullies, but goes a little too far in doing so.
Carl faces the consequences of his actions while it is revealed that the Whisperer Paul has captured is a 16 year old girl. Meanwhile, parents of the bullies, fed up with Maggie's leadership, begin planning to dethrone Maggie as their leader when Gregory insists that they kill her.
Though the families of the bullies who attacked Sophia and Carl decline Gregory's plan. They ultimately come to terms with him on one condition, they kill Carl too. Meanwhile, Carl and Lydia form a bond as Maggie and Paul put the pieces together. Outside the Hilltop, The Whisperers await their leader as they spy on the community.
Carl and Lydia continue to bond as Maggie and Jesus try to figure out what to do. After a short confrontation with one of the parents of the children beaten by Carl. Gregory invites Maggie to his trailer where he attempts to poison her. However, he is found out by Paul shortly after drugging her.
Gregory is subdued and Maggie survives the botched poisoning while Lydia begins to open up how different her world is compared to the Hilltops. Just then, The Whisperers leader arrives with a proposition and not all are happy.
Ezekiel is having fun dispatching some walkers near a port when Rick arrives with a small convoy. Meanwhile, Maggie and the others struggle to find Carl who has been taken in by The Whisperers. Back at the pier, Ezekiel and Rick discuss the upcoming fair when a familiar face arrives.
Gregory pleads that he has been framed and insists that he is innocent of any wrong doing, but to no avail. Maggie and Paul discuss what to do with him when Maggie comes to the realization that they may have to kill him. Back at Alexandria, a dangerous mishap occurs.
Negan's plan is set into motion as he is taken in by The Whisperers and meets Alpha. Aaron and Michonne cross the border in pursuit but are stopped and confronted by The Whisperer's monstrous second-in-command, Beta.
Michonne and Aaron are saved by Dwight and his men, but not before Aaron is severally injured. The two rush to the Hilltop for aid leaving Dwight as he realizes they have just committed an act of war. Meanwhile, Negan tries to swoon Alpha and begins to offer valuable information in exchange for joining their group.
Negan begins to earn his keep among the Whisperers. However, after questioning their way of life, he is secluded from the group. Beta pushes for his removal but Alpha grants him his stay. The two later have a heart to heart and, after seemingly beginning to form a connection, Negan decapitates Alpha.
Negan attempts to earn the trust of Rick by bringing him Alpha's head. Beta discovers Alpha's corpse and declares war against the survivors. The Kingdom's new leader, William, is questioned by his advisor. Dwight formulates a plan with the Militia and sends Gabriel out to scout.
Gabriel encounters The Whisperer's horde first hand while Vincent tries to persuade The Saviors to help with the fight. Oceanside is unable to support Alexandria and the Militia is left to face the horde alone.
Negan and Beta encounter each other on the battlefield and brawl it out. Casualties begin to emerge as the undead swarm the survivors. Vincent is turned away by The Saviors and William proves he is not to be trifled with. Dwight comes up with a plan to infiltrate The Whisperers.
The Whisperers re-establish themselves and aim for the Hilltop. Vincent is left alone by The Saviors and is saved by Heath. Tara attempts to reconcile with the two but to no avail after informing them that they will not contribute in the war effort against The Whisperers.
Numerous roamers from The Whisperers' herd breaks through the gates and kills a survivor while the rest starts to get distracted away by the riders. John and Tara scouts the Alexandria Safe-Zone from afar.
The hilltop residents begins to arrive at the overran Alexandria. Rick and Negan works together to flee from the herd and reflects on some of their past experience while trapped. Eugene and the other riders manages to lead some of the herd away from Alexandria. John and Tara prepares to move the other saviors to Alexandria to 'clean things up'.
Siddiq and Annie hears Stephanie's voice on the radio. Rick and Negan continues to help each other. Kelly and Connie begins to plan to help take down the roamers with others. The Saviors ambushes Heath, Dwight, and Laura. Carl and the other hilltop residents begins to prepare to fight the roamers. Andrea gets bit on the neck while trying to save Eugene.
The riders continues their duty to lure the herd off the cliff. The Saviors confronts the Alexandria and Hilltop residents. Rick and Sherry begins to fight just before he accidentally kills her. Rick finds Andrea's bite wound.
Michonne catches up with Elodie and finds out the fate of her other daughter and ex-husband. Meanwhile, Pamela's right hand man, Mercer, watches over her son, Sebastian. Having enough of their abuse, Mercer later vents his annoyances with the family to his men, which is overheard by Siddiq.
At the Sanctuary, John, the new leader of The Saviors, is surprised by the arrival of Rick and his guest. After touring the Sanctuary, Rick leads the group through The Kingdom and lastly, the Hilltop. Pamela learns the history between the four groups while Rick and Dwight make amends.