4x1 7 Feb 2013 History 101 As Jeff competes for spots in an overbooked 'History of Ice Cream' class, Abed copes with the looming end of their time at Greendale by retreating into a surreal mental 'happy place', while Annie and Shirley engage in school-wide pranks. 4x2 14 Feb 2013 Paranormal Parentage On the way to a Halloween party, the study group must free Pierce from his panic room and slowly comes to suspect that his mansion is haunted. 4x3 21 Feb 2013 Conventions of Space and Time Troy worries about losing Abed to a fellow Inspector Spacetime fan at a convention for the show, while Annie fantasizes about being married to Jeff. 4x4 28 Feb 2013 Alternative History of the German Invasion The study group contends with a group of German students who take over the study room. Chang makes his return to campus. 4x5 7 Mar 2013 Cooperative Escapism in Familial Relations Britta joins Jeff to see his estranged father on Thanksgiving. Shirley invites the rest of the group to spend the holiday with her judgmental in-laws. 4x6 14 Mar 2013 Advanced Documentary Filmmaking Greendale comes together to get to the bottom of Chang's amnesia, which Abed films as a documentary. Jeff, however, suspects Chang is faking it. 4x7 21 Mar 2013 Economics of Marine Biology Dean Pelton enlists the study group to beautify the campus to woo a wealthy student to Greendale. A class on teaching P.E. pits Shirley against Troy. 4x8 4 Apr 2013 Herstory of Dance Jeff sets out to embarrass Britta when she announces a dance for women's empowerment. Abed dreams of shuttling between two dates in one night. 4x9 11 Apr 2013 Intro to Felt Surrogacy Dean Pelton prompts the study group to use puppets to relive the traumatic events of a recent adventure. 4x10 18 Apr 2013 Intro to Knots Jeff organizes a lovely holiday gathering at his apartment, but Annie secretly invites Professor Cornwallis to get in his good graces. 4x11 25 Apr 2013 Basic Human Anatomy When Annie and Shirley learn that Leonard is actually holding the spot as the class valedictorian, they join forces to bring him down. 4x12 2 May 2013 Heroic Origins Abed's research into the study group's history uncovers an overlooked series of chance encounters that led each of them to Greendale. 4x13 9 May 2013 Advanced Introduction to Finality A plan to celebrate Jeff's early graduation is unexpectedly disrupted by the study group's evil doppelgangers from the Darkest Timeline.