While in Atlanta, the group encounters a rival band of survivors known as the "Vatos," led by a man named Guillermo. A confrontation ensues when the Vatos kidnap Glenn and demand Rick's bag of weapons in exchange for his return.

The episode follows , Daryl Dixon, T-Dog, and Glenn Rhee as they return to Atlanta to retrieve a bag of guns Rick dropped in a previous episode and to find Daryl's brother, Merle.

The episode explores themes of preconception vs. reality (the Vatos) and the constant, unpredictable threat of the post-apocalyptic world (the camp attack).

While the scouting party is away, the survivor camp on the outskirts of Atlanta is suddenly overrun by walkers . This leads to significant casualties, most notably Amy (Andrea's sister) and Ed Peletier (Carol's husband). Key Character Developments