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The gang celbrates Christmas together for the first time. As they gather at Jeff's place, Annie decides to invite Prof Cornwallis to dinner in an effort to boost their grades on their last test.

Britta throws a Sophie B. Hawkins dance in protest of the Dean's Sadie Hawkins dance. Meanwhile, Annie and Shirley's respective blind dates for Abed leads him to attempt the classic sitcom trope of two dates in one night.

Shirley and Pierce's sandwich shop is chosen to replace the campus Subway, but a conflict ensues between the partners and Jeff has to argue on Shirley's behalf in Dean Pelton's version of court. Meanwhile, Troy is recruited by the Air Conditioning Repair Annex.

When the group's science project is destroyed, they decide to hold a trial to find the criminal, which a reluctant Professor Kane(Michael K. Williams)presides. While Troy and Abed believe they have discovers the perpetrator, Jeff soon realizes there's much more to the story than is believed.

Annie and Abed spend some quality time together in the Dreamatorium for a simulation of "Inspector Spacetime". The game soon transforms into an examination of not only the study group, but also a deeper look into Abed's mind and personality.

While Annie, Troy and Abed try to help Britta stay away from an old ex, Jeff and Shirley attempt to find out who he is. Elsewhere, Vice Dean Laybourne turns to Dean Pelton for help with his campaign to get Troy to join the Air Conditioning Repair School.

When a Subway open's in Greendale's cafeteria, Pierce and Shirley plot to shut it down. Meanwhile, Vice Principle Laybourne starts to turn Abed and Troy against each other while in the midst of another school-wise blanket fort.

Andre asks Shirley to remarry him and they set a date. Annie and Britta prep for the wedding while Jeff prepares the wedding speech. Shirley and Pierce present the idea of a sandwich shop to be added to the Greendale cafeteria to Dean Pelton.

The group tries to help Annie move in with Troy and Abed but things go awry when she becomes frustrated by their lifestyle. Meanwhile, Dean Pelton blackmails Jeff into spending the afternoon with him.