While battling an old rival to gain control of a class-action lawsuit, Alicia, Will and Diane discover that a traitor is in their midst. Meanwhile, the Florrick campaign tries to find a way to win the youth vote.

Diane defends her erstwhile love interest, Kurt McVeigh, when he faces a law suit from a convicted criminal who has now been released when his lawyer shows the police and the crime lab manufactured evidence. They go after McVeigh in the belief that he too was part of the conspiracy. To get the case thrown out, Diane will have to show that he made an honest mistake. Meanwhile, Eli Gold thinks he's found the silver bullet in Peter's campaign against Wendy Scott-Carr: it appears that the she hired an illegal alien, Natalie Flores, as a nanny. She's been living in the U.S. since the age of 2 and has a lawyer working on her citizenship. She's completing her Master's degree and is an all-round good person which leads Eli to question what he is doing. At home, Alicia has a heart to heart with Grace who has developed a keen interest in religion.

As the vote to determine the fate of the firm arrives, Lockhart, Gardner, and Bond make final maneuvers. Meanwhile, the firm takes a case involving the Internet and human rights, and Peter's campaign tries to take out Glenn Childs.

Alicia helps Bishop with his divorce and custody settlement, and helps Kalinda after she is subpoenaed to appear in front of a grand jury. Meanwhile, Eli changes Peter's campaign strategy to appeal to white, middle-class voters.

Alicia's case involving at-will employees trying to unionize sparks a possible mutiny at Lockhart Gardner. Meanwhile, Peter gives Alicia an opportunity to renew their wedding vows, but he also needs her help on the campaign.