Jeff gives Professor Duncan advice on seducing Britta. Meanwhile, Britta reconnects with old friends and realizes how they've changed; Abed accidentally damages Professor Hickey's drawings, which leads to the pair spending quality time together; and Chang performs a one-man show for an other-worldly audience.
Class war erupts when Greendale becomes a test site for a new social-network application. Competition for the highest score leaves Jeff and Shirley battling for supremacy and Britta protesting. Professor Hickey, meanwhile, goes underground to wait out the storm.
Professor Hickey announces that he has just become a grandfather. But since he and his son (David Cross) don't speak to each other, the gang stage a game of Dungeons and Dragons in an attempt to get the two to reconnect.
Subway plans to purchase the Greendale campus and establish a Subway University in its place. Meanwhile, Jeff considers an employment offer from Subway; Britta ponders an offer from Jeff; and Annie and Abed obtain information about Greendale's first dean, which leads to a discovery within the school's walls.
The history of Greendale's first dean is uncovered in the Season 5 finale. Meanwhile, Annie and Abed search for an abandoned computer lab; Chang becomes involved in Subway's plan to take over Greendale; and Jeff and Britta make a decision about their futures.