At Troy and Abed’s home, the study group attempts to convince Officer Cackowski that Chang has displaced Dean Pelton with a look-alike. However, the valid evidence they can present is a current commercial for Greendale, which features propaganda driven through Chang as well as the impostor. Because the footage is shot at a distance, it’s not conclusive. Due to their absence of actual proof, he dismisses their claim, unable to buy such a ridiculous premise. When Annie attempts to return to the building to find more proof, Cackowski issues them a warning: if they get inside fifty yards of the campus, he’ll have them arrested.Back at Greendale, Chang and his lieutenant Joshua are going over plans for his lavish birthday extravaganza. Outside the school, Troy, Annie, and Britta are implementing surveillance of the campus but are unable to get closer anticipated to the massive security. Troy contacts the A/C repair school to find out further information and meets up with Murray at SeƱor Kevin’s. Troy receives the Dean is being held captive in the cafeteria basement and is provided details on Chang’s security layout. Murray informs him that they’ll require the A/C repair school’s help which they will only provide if Troy ultimately agrees to join them. Troy returns to the study group with the information and Murray’s offer. They all deny the A/C repair school’s assistance and instead set out to plan an elaborate heist.On the evening of Chang’s party, Chang greets Richie and Carl from the Greendale school board. Despite his exhortations to his flocks to be on high alert, Shirley sneaks into the school disguised as a baker who passes the birthday cake. Inside the cake is Annie, dressed in a security guard uniform. Shirley then plugs up a toilet in the ladies restroom. The resulting flood causes Chang’s guards to call in plumbers who turn out to be Troy and Abed in costume, as Barry and Rod. Their job is to break through the wall of the restroom and get to Chang’s office which has the codes to open the door to the cafeteria basement. Meanwhile, Jeff cancels the magician scheduled while Britta gets Joshua to abandon his post by flirting with him on Facebook.