As the Greendale study group gathers in the library, they wonder whether they will see their old friend Pierce, who left the study group in a huff after last spring's paintball game. Jeff quickly butts heads with their new biology teacher Professor Kane and is kicked out of class - leading to a crisis within the group about whether they will all stay together. Dean Pelton is feeling empowered after a summer at "Dean Camp" but finds a new nemesis in Vice Dean Laybourne, dean of the highly regarded Air Conditioning Repair Annex at Greendale.

Source: NBC