Greendale holds a school-wide paintball tournament, for the prize of priority registration, that throws the whole campus into chaos. The group forms an alliance, but they get picked off one by one.
Jeff and Britta are the last two standing, and they finally release their sexual tension, but agree never to mention it again.
The dean, upset about what is going on around campus, invokes the aid of Señor Chang, a paintball expert. Jeff still manages to win. He gives the prize Shirley, so that she can spend more time with her children.