The first prize of priority registration engulfs Greendale Community College in a Spring Fling paintball war.

When an old friend from Jeff's past appears unexpectedly, his friends discover that he was the one responsible for Jeff's disbarment.

With Chang pressing for membership in the study group, Annie's latest crush has Jeff reeling as Shirley unveils some stunning news.

Jeff is suspicious of Pierce's engagement to a pretty classmate. Troy invents a childhood trauma to impress Britta, and Abed challenges a professor.