Pierce comes to Shirley with a business proposal just as she's about to get married to Andre. Meanwhile, Troy and Abed try to act "normal" for the wedding, Britta discovers a new skill, and Jeff struggles with his toast.
The members of the Study Group take jobs as celebrity impersonators to pay off Abed's debt to a celebrity impersonator business, but can Jeff be Ryan Seacrest without his fragile ego spiral out of control?
Shirley and Pierce recruit Britta to sabotage the new Subway restaurant in the cafeteria. Jeff finds a hate-letter in the school locker he never realized he had. Troy and Abed begin constructing a pillow fort, but thanks to some outside manipulation Troy splits off to build his own blanket fort.
The United Forts of Pillowtown, headed by Abed, is at war with the Legit Republic of Blanketsburg, ruled by Troy. Annie sets up a hospital zone to treat casualties on both sides. Britta takes a stab at war-photography. Jeff tries to reunite two former friends turned mortal enemies using sarcasm.
While Britta struggles to stay away from her old carny boyfriend, Jeff becomes obsessed with their relationship. Meanwhile, the dean stops by Troy and Abed's to recruit Troy for the dean of the school of refrigeration.
The study group takes a three hour lunch. Annie suggests Abed shows her how the Dreamatorium works so Troy and Britta can be together. But their 'Inspector Spacetime' simulation soon turns into a hospital bound drama in which Abed takes on the personalities of the other group members.
Presented like an episode of Law & Order (1990), the study group attempts to find out who squashed their biology project: a yam. Troy and Abed become detectives, Shirley is their boss, Jeff and Annie pose as prosecuting attorneys, while Pierce is an informant and Britta a lab tech.
A fellow student has died and Biology class has been canceled, meaning everyone has to retake it in summer school. When the memorial service turns into a riot, Chang is granted special authoritative powers.