Paul Aufiero (Patton Oswalt), a 35-year-old parking garage attendant, is the self-described "world's biggest New York Giants fan." He lives at home with his mother (Marcia Jean Kurtz), spending his off hours calling in to local sports-radio station 760 The Zone, where he rants in support of his beloved team. One night, Paul and his best friend Sal (Kevin Corrigan) spot Giants star linebacker Quantrell Bishop (Jonathan Hamm) at a gas station in their neighborhood. They impulsively follow his limo into Manhattan, to a strip club. Paul cautiously decides to approach him, but things do not go as planned. The fallout of this chance encounter brings Paul's world crashing down around him as his family, the team, the media and the authorities engage in a tug of war over Paul, testing his allegiances and calling into question everything he believes in.