Mike and Rachel's engagement is put on the back burner as Donna leaves Harvey to work for Louis. Harvey is in denial and is confident she will return, but will he be able to handle it when he discovers she's not bluffing?

Harvey uses some star power in his conflict with Jack. Robert Zane to co-counsel is brought in by Mike.

Harvey faces old rival Travis Tanner, who claims to be a changed man, in a case. Harvey's sessions with Agard reveal the influence his past has on his present. Jessica tasks Louis to fix things with Harvey, but the plan may make an enemy of Jack.

Harvey reels from Dr. Agard's revelation about the root of his panic attacks and has to make a tough decision in a case that touches a nerve. Mike and Louis take over responsibility for Harvey's oldest client. Donna tries to make Rachel's dream wedding possible.

Mike teams with Jack Soloff on a case. Esther Litt returns to P.S.L. in hopes of discreetly solving a problem. Donna and Harvey try to return their friendship to normal.

Jessica does damage control in the wake of Harvey punching Louis, just as Jack Soloff and Daniel Hardman are looking for weaknesses to exploit. Meanwhile, Donna counsels both men on how to rectify their issues. And Mike must find a way to turn down his recently announced promotion without raising suspicion - while he and Rachel combat an opposing attorney who holds the key to uncovering his secret.

Jessica and Louis attempt to rally the partners to prevent the takeover attempt by Hardman and Soloff. Mike and Harvey both have to deal with demons from the past as they make potentially life-altering decisions.

Mike returns to Pearson Specter Litt as Harvey takes the reins. Louis manages the new class of associates, while Donna and Rachel find their places in the new world order.

Harvey butts heads with his partners over a bold move. Mike pursues a pro bono case with the legal clinic. Donna's actions raise tough questions at the firm.

Louis and Harvey wrangle with new firm dynamics. Mike's latest success brings him unexpected new business. Rachel's leadership is challenged by an insubordinate associate.

Mike juggles his work obligations with his promise to help a family; Harvey asks for Louis's discretion in a sensitive matter; Donna vets a possible addition to the firm.

Mike deals with the blowback on his prison case; Harvey tries to tell Donna about his relationship with Paula; Louis' past behavior comes back to haunt him.

Harvey and Mike seek outside help; an unexpected encounter derails Louis' search for a new associate; Donna receives a proposition.

After their power move gets countered, Mike and Harvey end up with their backs are against the wall. Rachel worries about her father's clouded judgment. Louis helps Alex.

Harvey and Louis fight to protect the future of the firm from its past; Alex worries Mike's instincts could risk a client relationship; Donna and Harvey delve into the aftermath of their kiss.

Harvey has to call in an old debt for the firm. Mike goes toe-to-toe with an unlikely opponent. Louis comes to terms with his new role.

Harvey is forced into a difficult decision when the impossible is asked of him. Mike and Rachel try to make time to discuss their future. Louis struggles with the rules of his relationship.