Rick and the group must make a choice when security is threatened; Andrea grows uneasy.
Rick attempts to rescue an imperiled member of the group, while a recent attack has left Woodbury in disarray. Later, concerns are raised at the prison after new guests arrive.
Tyreese, Carol and the girls continue on their journey to Terminus. During the journey, they stop at a farm to rest and deal with their ever changing situation.
As one group leaves the prison in search for supplies at a local college, those who stay must deal with recent losses while preserving what remains.
Rick and the others learn that if they want a truce with the Governor, they must make a sacrifice.
Rick's mission to return to Atlanta may need to be aborted when he runs into some unforeseen problems. Meanwhile back at camp, Jim appears to be going off the deep end.
After the fall of the prison, multiple survivors have splintered into smaller groups. Maggie searches for Glenn and discovers the prison bus, while Tyreese runs across Carol who discover a way to the town of Terminus.
The group await Shane's return, unaware that he's trapped in a school surrounded by zombies; Daryl and Andrea scour the woods for a missing person.
"Wildfire" will follow Rick leading the group to the CDC after the attack. Jim must make a terrible life and death decision.
The Governor continues to struggle between his new responsibilities and trying to cope with his past losses. Once choices have been made, the Governor goes down a familiar path that will find him going after old enemies.