As Alicia tries to revive her struggling law career, attorney Lucca Quinn becomes her competition; Peter engages Ruth Eastman, a new strategist for his campaign, changing the dynamic with Eli in the process.
Alicia argues a complex museum vandalism case that involves photographs taken by a mother of her son, and considers enlisting the help of investigator Jason Crouse. Meanwhile, Cary deals with inappropriate conduct towards some younger associates at the firm by partner Harold Lyman.
Alicia and Lucca work together on a complicated case involving a designer drug dealer. Meanwhile, Eli persuades Alicia and Veronica to participate in a mother-daughter cooking show to help Peter's campaign, but things don't go as planned.
When Alicia agrees to support a client's plea of innocence in a shoplifting case, she clashes with the bond court judge; Diane is coerced into arguing against her own beliefs in a case about assisted suicide.
Jason uses aggressive investigative tactics while working on a student loan case with Alicia and Lucca. Howard points to Cary as the primary offender when he alleges ageism at Lockhart, Agos & Lee. Eli creates drama among the Florricks.
Alicia and Lucca defend a former technology firm employee who was fired after failing a polygraph test. Eli wants to leak information that would damage Peter's campaign---but could also impact Alicia.
Peter moves in with Alicia to present a family image while Alicia and Lucca go up against Lockhart, Agos & Lee.
Diane is personally conflicted when she is forced to argue a heated case between pro-choice and pro-life advocates in order to retain an important client, represented by attorney Ethan Carver. Also, Alicia and Lucca are desperate for new business and attempt to poach business from Louis Canning.
Alicia and Lucca join forces with Louis Canning to defend a website accused of racial profiling. Meanwhile, Eli and Ruth worry about the nature of Alicia's relationship with Jason and how it could impact Peter's presidential campaign.
A well respected surgeon is accused of plotting to commit a crime; Ruth suggests that Courtney Paige (Vanessa Williams) hire Jason for business in another state, hoping to remove him from Alicia's life.
Tensions run high as the entire Florrick family is crammed into Peter's campaign bus with Eli and Ruth on their way to the Iowa Caucuses. Once there, Peter attempts a high-risk political stunt to gain votes for his presidential bid.
Alicia argues against Judge Schakowsky when she learns that a former bond court client was wrongfully imprisoned. Also, Diane assists the student editor of a college newspaper when the school threatens to fire her for writing a politically charged article.
Alicia has trouble adjusting when she returns to work at Lockhart, Agos & Lee with Lucca. Their first case, involving a secret new computer tablet, causes a rift within the firm.
Alicia joins a secret panel of attorneys advising the federal government on a controversial case. Also, Eli hires Elsbeth Tascioni (Carrie Preston) to uncover why the FBI is targeting Peter.
As the grand jury against Peter Florrick is assembled, with U.S. Attorney Connor Fox (Matthew Morrison) leading the proceedings, Alicia, Eli and Peter's lawyer, Mike Tascioni (Will Patton), attempt to discover what charges are being leveled against him. Also, Alicia and Jason attempt to spend a quiet weekend together but are interrupted by her meddling family.
Diane, Cary and Lucca defend the grieving father of a shooting victim (Blair Underwood) in a defamation suit over a billboard he put up describing a gun store owner as a murderer. Also, a romantic rendezvous between Alicia and Jason is interrupted when Alicia learns that Grace is being accused of plagiarizing her college entrance essay.
Alicia and Diane defend the privacy rights of a therapist whose neighbor, represented by attorney Caitlyn D'Arcy (Anna Camp), flies a drone over his home office. Also, Assistant US Attorney Connor Fox attempts to use Eli's daughter Marissa, as leverage in the case against Peter while the power struggle at Lockhart, Agos & Lee reaches a boiling point.
Alicia and Lucca travel to Toronto to represent NSA agent Jeff Delinger (Zach Woods) who was detained by customs officers while attempting to re-enter the United States. Also, Diane grows concerned when her husband, Kurt McVeigh (Gary Cole), decides to retire and sell his business to Holly Westfall (Megan Hilty), a rival business owner. Peter contemplates an uncertain future when faced with a possible arrest.
Alicia’s night goes from bad to worse when she throws a party to celebrate Howard and Jackie’s upcoming wedding. Also, Eli asks Jason to investigate Peter in preparation for his trial,
As Peter's trial begins, Alicia works desperately to keep her husband from returning to jail. Also, Diane and Lucca move aggressively to expand the law firm, but face serious opposition from David Lee.
