As Family Day lands Jeff in the middle of an affair with Pierce's sexy ex-stepdaughter, Shirley's unruly sons help liberate Abed's Afghani cousin.

A scheme to replace a corrupt cafeteria employee transforms the study group into a criminal gang run by a power-hungry Abed.

Dean Pelton's army surplus party food sparks an outbreak of zombie-ism at the Greendale Halloween party.

On Valentine's Day, Troy and Abed compete for the attention of an assistant librarian, while Britta tries to show she's open-minded about lesbians.

As the semester ends, the anthropology final is disrupted when Shirley goes into labor and her husband, Andre, is summoned to school for the birth.