With no hope of safety in Alexandria, Rick and his band of survivors soon discover a larger world with new dangers and new opportunities.
Carrie urges Qasim to stop the subway tunnel attack; Ivan tells Saul how Allison will be extracted from the country; Saul offers Carrie a new job at the CIA; Carrie barricades herself in Quinn's hospital room.
Carrie and Saul urge the doctor to revive Quinn so they can find out where the attack occurred; Allison receives instructions to make sure the attack on Berlin goes successfully; Carrie investigates at the train station.
Iraq veteran Walter Sherman helps a teenage boy locate his missing father, a military pilot who vanished while on a mission; Leo and Walter keep a watchful eye on a teen parolee.