Rick and the group leave Atlanta and encounter a threat on the highway the likes of which they've never seen. Elsewhere, the group search for a missing person.

Rick discovers a possible safe haven. Shane must go on a dangerous mission to get needed medical supplies.

The group desperately awaits Shane's return. Shane finds himself trapped in a school, surrounded by the undead. Daryl and Andrea search for someone in the woods.

Shane makes a deadly sacrifice which leads to unusual behavior and self-distancing. The rest of the group tries to hang on somewhere between living to die and dying to live.

Concerned for their safety, the group makes a plan – one that Hershel disagrees with adamantly. He makes it clear the group is fine to stay for now, but not indefinitely.

Secrets are told and secrets are revealed. Hershel refuses to acknowledge the world’s new reality. Andrea comes out of her shell. Everyone is becoming more and more aware that “everything is food for something.”

Hershel sets a deadline. All secrets are out in the open. Glenn stands up for himself and Shane takes charge.

Rick and the others try to restore order in the aftermath of a terrible discovery. Hershel takes up an old habit and disappears, Rick and Glenn must follow him into town.

Rick, Hershel and Glen are trapped and fight to survive; Shane finds Lori in danger.

Rick and Shane are in conflict over the fate of an outsider; Andrea helps Hershel's daughter face a crucial decision.

Rick sides with Shane causing Dale to worry that the group is losing its humanity; Carl's actions have unintended consequences.

Rick and Carl find the farm in jeopardy; the group is split up in the chaos; Rick's leadership is questioned.