The Walking Dead season 4 episode 5 firstly titled as Internment. And having the possible story line something like this one: The supply mission faces hurdles; the situation at the prison worsens.
After previously on Indifference: Daryl, Michonne, Bob, and Tyreese set off to find a new car. In the process of clearing brush away from the front door of an auto shop, Tyreese forcefully breaks open wires blocking the door and walkers attack the group through the brush. Tyreese intentionally lets himself be overtaken by a walker, but he is saved by Daryl and Bob. Rick takes Carol along on a supply run and they come upon a house where they discover two survivors, a couple named Sam and Ana.
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After Carol patches Sam's wounds, the two request to join them at the prison, despite the viral outbreak. Rick decides to let them join, telling them to stay put until Carol and he finish. When the two offer to help scrounge supplies, Carol suggests they do so against Rick's protests. Rick gives them both guns as well as his watch to know what time to meet back up. Daryl and the others get a car working and head off to the college again. Bob tells Daryl alone about his alcoholism and his fault behind Zach's earlier death in the store. At the college, Bob is almost killed trying to protect his bag which contains only alcohol that he found at the college and no medical supplies.
Daryl almost beats Bob, but simply threatens him. Before leaving the college, Michonne tells Daryl that she finally agrees that the Governor's trail "had gone cold" and that she is no longer interested in looking for him. Carol and Rick find Ana's body being eaten by walkers. Sam never shows back up. When preparing to leave, Rick tells Carol that she cannot come back to the prison because Tyreese will kill her, the others will not agree with her decisions, and that she took matters into her own hands when she did not have the right to do so. Rick helps her pack some supplies into another car and sends Carol off on her own.