Rick hoes a garden in the prison yard. He finds a pistol in the dirt, empties its magazine and tosses both into a wheelbarrow.
Nearby, a walker claws at the fence, its eyes, ears and mouth dripping with blood.
Carl joins Rick and asks what's wrong with their pig, Violet, who's lying motionless in the sty. Rick has no explanation and insists Carl refrain from naming the pigs. "They're food," he says.
In an outdoor picnic area, Carol jokes with Daryl about his popularity with all the people he's helped bring to the prison. Patrick, one of the young newcomers, asks to shake Daryl's hand.
Just across the field, a group of survivors stabs at walkers that are clawing at the perimeter fence. Carol tells Daryl there was a buildup of walkers overnight, and that it's getting worse: "They don't spread out any more," she says.
Meanwhile, Maggie nuzzles Glenn in bed. Fearing that she may be pregnant, Glenn urges her to sit out the supply run to the Big Spot! department store that day.
At the perimeter fence, Tyreese tells Karen - formerly of Woodbury - that he doesn't like killing walkers at the fence, and is therefore joining the supply run. She urges him to be careful and they kiss.
Zach, a young newcomer, helps Daryl load a truck and tells Beth that he's going on the run as well. Beth kisses him, but refuses to say good-bye.
Another newcomer, Bob, asks Sasha if he can join them on the run. She says no, on the basis that he's only been at the prison for a week. Glenn points out that Bob's Army medic training could come in handy. "You're a hell of a tough sell," Bob tells a skeptical Sasha, who eventually agrees to let him join.
Michonne returns from a search for the Governor and reports zero luck. She says she'll expand her search to Macon County.
Rick orders Carl to stay behind while he checks snares outside the fences for prey. Hershel tells Rick that the Council - himself, Daryl, Glenn, Carol and Sasha - wants Rick to bring a gun when he goes out. "I have my knife," Rick argues, although he eventually relents.
In the forest, Rick finds a woman foraging for food and offers her his own. She asks if she and her husband can join his group. Rick says he first has to meet her husband and then ask them three questions.
Back at the prison, Carl and Patrick find a group of children giving names to walkers at the fence. Carl reprimands them: "They're not people, and they're not pets," he says. "Don't name them."
At the Big Spot!, Daryl knocks on a window to flush out walkers. The group methodically kills the strays, then marches inside. But unbeknownst to them, scores of walkers mill around a downed helicopter on the building's rooftop.
En route to her camp, the woman, Clara, tells Rick she never would have survived if it weren't for her husband. "He showed me the things that I had to do, or be willing to do," she says. "If he wasn't still here, I couldn't be."
At the store, the team fills their carts with supplies. Glenn finds a billboard advertising baby photos, and grabs an instant camera.
Bob takes a wine bottle off a shelf and gazes at it longingly. With newfound resolve, he slams the bottle back on the shelf, causing the entire unit to collapse.
The walkers on the roof react to the sudden noise. The unstable roof starts to give way under their shuffling feet, and walkers begin crashing down into the store.
In the forest, Clara expresses hope that she and her husband will be able to answer Rick's questions satisfactorily.
Back at the store, walkers continue to fall through the ceiling and attack the team. A walker bites Zach and ravages him. The team evacuates just as the roof collapses, bringing the helicopter down along with it.
Meanwhile, Rick and Clara arrive at Clara's camp, where she immediately rushes to a nearby pile of supplies. "This is Rick," she says to the pile, "and he's going to help us." Rick looks on, puzzled.
Clara suddenly charges at Rick with her knife. He throws her to the ground. "He's starving!" she screams. "He's slowing. He needs something alive." Rick looks at a nearby burlap sack, which contains the remains of Clara's husband, now reanimated as a walker.
Then Clara turns the knife on herself. "I can't be without him," she says, stabbing herself in the stomach.
Dying, Clara asks Rick what his three questions were. Rick solemnly asks: "How many walkers have you killed?" Then "How many people have you killed?"
"Just me," Clara answers.
"Why?" Rick asks.
"You don't get to come back from the things you've done," she answers.
Meanwhile, Carl enters the library as Carol kicks off story time. After the parents of the children leave, she furtively opens a trunk full of knives and shows the kids how to use them for protection. Patrick, feeling unwell, asks to be dismissed. Carol sees Carl and asks him not to tell Rick about her lessons.
Out in the prison yard, Rick returns from his encounter with Clara and finds Violet the pig lying dead in a corner of her pen.
Tyreese, back from the run, joins Karen in her cell. "I don't like going out there, either," he tells her.
Glenn reports to Maggie about Zach's death. She tells Glenn that she's not pregnant. "Thank God," he says. She argues they could have raised a child. "I don't want to be afraid of being alive," she says.
Beth reacts matter-of-factly to news of Zach's death. "I don't cry anymore," she tells Daryl. "I'm just glad I got to know him."
As Rick cradles Judith, he confides in Hershel his fears of becoming as mad as Clara. Hershel reassures him that he was nowhere close to that. Besides, Hershel reminds him, "You came back."
That night, Patrick staggers to the bathroom, coughing feverishly. He drops dead in the shower, blood streaming from his eyes, ears and mouth. Moments later, his eyes open: He's turned.