A storm is brewing at Reddick, Boseman & Lockhart when revelations of past indiscretions involving a partner come to light. Right when she thought the world couldn't get any crazier, an incident at home pushes Diane to her breaking point. Meanwhile, Lucca is brought a new opportunity while Marissa teaches Maia to toughen up.

Reddick, Boseman & Lockhart is asked by ChumHum to bring on a specialist, lawyer Brenda DeCarlo (Cheryl Hines), to investigate any remaining misconduct or cultural issues within the firm. Diane begins to question the resistance group's tactics while Blum approaches Maia with an intriguing job offer.

Lucca's involvement in a viral "mothering while black" video sparks conversations at Reddick, Boseman & Lockhart that unearth racial biases and pay disparity at the firm. Liz joins Diane at a resistance group meeting but their next act -- to help swing votes in key states -- hits close to home when the group decides they need a celebrity influencer. Maia faces serious consequences at the firm thanks to Blum.

Blum weasels his way to a co-counsel seat on Reddick, Boseman and Lockhart's largest case against genetics testing company Second Helix. While volunteering as democratic poll watchers in the suburbs of Chicago, Lucca and Jay come face to face with an alt-right group aiming to intimidate voters. Meanwhile, Maia attempts to move on while the partners grapple with a divided firm following revelations of pay disparity.

Blum is out for revenge when he represents a group of Reddick, Boseman & Lockhart's ex-clients who claim the firm overcharged them. When Lucca finds out she's a candidate for an open partner position, she begins to question her reputation within the firm. Meanwhile, Diane helps Kurt with a work project.

Diane is encouraged to "do something" after meeting the leader of a female resistance group whose aim is to sink POTUS' approval rating. Maia and Blum's plan for a plea deal goes awry when Assistant State's Attorney Spencer Zschau takes over the case. Lucca receives a surprising new divorce referral while Marissa helps Julius find a campaign manager to support his run for federal judgeship.

Celebrity hairdresser Wade V seeks Lucca’s help with a postnuptial agreement for a high profile client. Following their deal with Second Helix, Blum makes his presence well known at Reddick, Boseman & Lockhart, rattling some partners more than others. With political pundits buzzing about the resistance group's covert efforts, Diane takes her axe throwing to the next level.

Diane and Liz deal with a close ally when assigned to a class action case involving malfunctioning voting machines in the 2016 presidential election. Blum’s domineering tactics continue to push buttons at the firm while he purposefully stalls his work on Second Helix. Lucca is intrigued by a handsome associate of Blum’s.

Felix Staples (John Cameron Mitchell) rattles the firm when he returns with a case against ChumHum, bringing along a familiar face as his representation, Solomon Waltzer (Alan Alda). Diane receives a mysterious note at home, leading Kurt to question what she's been up to. Meanwhile, actor Gary Carr shadows Lucca for his upcoming role as a lawyer.

Corruption incarnate enters the courtroom in the form of attorney Roland Blum, Maia's new co-counsel on a murder trial. The firm interviews a potential new head of matrimonial law, but Lucca is skeptical of his qualifications. Diane lets off some steam after finding out who recommended Kurt for a new job.