Several months later, the prison community has gotten bigger. Many people in the prison get sick with the flu at once. The flu kills many people who come back as walkers. Rick sends Carol away for murdering two sick residents. Walkers attack the prison fence and break it but are stopped afterwards. The Governor meets the Chambler family, and they join another group of survivors led by Martinez, who was in Woodbury before. The Governor kills Martinez and takes lead the group to attack the prison. Rick offers to share the prison, but The Governor calls Rick a liar and kills Hershel. The Governor fights Rick and is killed by Michonne, but the prison is taken over by walkers and Rick's group is divided.