Greendale’s choir director (Taran Killam) recruits the study group to fill in for the sidelined glee club. Though initially skeptical, the gang soon get in the spirit for the school’s Christmas pageant

Annie plans to move in with Troy and Abed, but their differences soon come between them. Elsewhere, Dean Pelton forces Jeff to spend a day at the mall with him.

Britta fears someone in the group is a sociopath after her anonymous personality test turns up unsettling results. In order to find out who’s disturbed, she and Jeff persuade the gang to tell horror stories

New roommates Troy and Abed host an apartment-warming party that takes a strange turn

The gang must pair off for a biology assignment but can’t decide how they should split up. Elsewhere, Chang keeps an eye out for trouble while patrolling the campus film-noir style

Britta’s tendency toward civil disobedience awakens after her friend is captured in a foreign country. Elsewhere, Chang gets comfortable in his job with campus security; Annie takes on her new frenemy (Irene Choi) during a Model United Nations match, leaving Professor Cligoris (Martin Starr) struggling to maintain order.

The study group wonder if Pierce will join them as they convene at the start of a new semester in the Season 3 premiere. Elsewhere, Jeff clashes with his biology teacher (Michael K. Williams) and is kicked out of class; and Dean Pelton has a new nemesis (John Goodman) at Greendale.