After an outbreak that turned the people into zombies, Ann, her husband Jason and their baby daughter flee to woods in the place where Jason was raised. He teaches his wife how to survive in the wilderness but he and their baby die. One day, the lonely Ann helps the teenager Olivia and her stepfather Chris, who is seriously wounded, to survive. When Chris is recovered, he invites Ann to move with Olivia and him to the North. However Ann has an unforgiving secret about the death of her baby and she decides to stay. Soon Chris and Ann have a one night stand and Olivia is jealous of the situation. When Chris and Olivia are ready to go, Ann suggests that they should scavenge food in a nearby farm. She goes with Olivia to bring food from the kitchen, while Chris creates a diversion to the zombies outside. However things go wrong with tragic consequences.