Jeff competes to earn the group places in the over-booked 'History of Ice Cream' class, while Abed struggles with the inevitable end of their time at Greendale, causing him to enter a .. show full overview
On Halloween, Pierce accidentally locks himself in his panic room, forcing the gang to search through his house to find the code that unlocks the door.
Conventions of Space and Time
The study group goes to the annual Inspector Spacetime Convention; Annie enjoys the luxuries of the hotel; Jeff spends time with an Inspector Spacetime fan (Tricia Helfer) in the bar.
Alternative History of the German Invasion
The study group starts its European history class with professor Noel Cornwallis (Malcolm McDowell); Dean Pelton is upset when Chang returns to campus.
Cooperative Escapism in Familial Relations
The study group goes to Shirley's house for Thanksgiving dinner; Jeff reunites with his father, who he hasn't seen since he was young.
Advanced Documentary Filmmaking
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.
Economics of Marine Biology
Jeff, Britta and Annie help Dean Pelton recruit a wealthy potential student; Abed starts a fraternity; Troy and Shirley attend a physical education class.
Herstory of Dance
Britta plans a Sophie B. Hawkins dance to compete with Dean Pelton's Sadie Hawkins dance.
Intro to Felt Surrogacy
When the study group's balloon ride crashes in the wilderness, the friends encounter a mountain man.
Intro to Knots
Annie invites Professor Cornwallis to Jeff's holiday party in the hope of getting on his good side; when the friends learn Cornwallis intends to give them a bad grade, they decide to take decisive action.
Basic Human Anatomy
Annie and Shirley try to bring Leonard down. Troy and Abed re-enact a scene from a body switching film.
Convinced that the study group was destined to meet, Abed pieces together everyone's past revealing that their lives have always been intertwined. Chang tries to destroy Greendale once and for all.
Advanced Introduction to Finality
With enough credits to graduate, Jeff contemplates his future. The study group once again is faced with the darkest timeline.