Rick's group finds the prison has become a relatively safe base, but a close call with a stranger reminds them they can never let down their guard.

As the group faces a brand new enemy, Rick and the others must fight to protect the livelihood they worked so hard to create at the prison.

Assorted enemies pressure Rick and the group. The survivors and the prison may reach a breaking point.

After things begin to calm down at the prison, Rick and his group now face imminent danger and destruction. This time, they might not win.