When the zombie apocalypse began, twenty-two-year-old Peter immediately jumped in to protect his little sister, seven-year-old Lily. And since their parents' deaths, the two siblings are on their own, relying on each other for survival. But luckily, they find a secure place to live - the Rooster House - an empty Colonial house with sturdy locks on the doors to keep out the zombies. And this is where they hide away, determined to outlast the zombies. Peter and Lily begin to carve out a life for themselves, meeting other survivors in the area, and doing their best to be independent, while hiding away from the zombies just outside their door.