Although the study group planned to take the History of Ice Cream together to kick off their senior year at Greendale, everyone except Jeff is ready to find a new course when they discover that their top choice is overbooked.
As the study group is getting ready for a Halloween party, Pierce frantically calls claiming he accidentally locked himself in his mansion’s panic room. Despite Jeff’s insistence that he’s lying to get attention, the group agrees to help and heads to Pierce’s tackily decorated home.
Troy (Donald Glover) worries about losing Abed (Danny Pudi) to a fellow obsessive Inspector Spacetime fan at a convention for the show, while Annie (Alison Brie) fantasizes about being married to Jeff (Joel McHale) after he backs out of their weekend plans. Guest starring Matt Lucas, Tricia Helfer, and Jerry O’Connell.
Shut out of the History of Ice Cream, the study group signs up for a class whose professor encourages them to look at history from multiple points of view.
As Britta (Gillian Jacobs) follows Jeff (Joel McHale) home to see his estranged father (guest star James Brolin) on Thanksgiving, Shirley (Yvette Nicole Brown) invites the rest of the study group to spend the holiday with her judgmental in-laws.
Dean Pelton asks the study group to help secure a grant for research into Chang's memory loss, while Abed films their efforts for a documentary.
Joel McHale
Jeff Winger
Gillian Jacobs
Britta Perry
Danny Pudi
Abed Nadir
Alison Brie
Annie Edison
Ken Jeong
Ben Chang