As the last season of Suits, Season 9 focuses on wrapping up the key characters' storylines while the company, now known as Specter Litt Wheeler Williams, deals with fresh dangers. At last, Harvey and Donna are together, managing their personal and professional relationship. As they stand together in the face of increasing pressure on the company, their relationship gets closer. Unrest is brought on by the presence of Faye Richardson, a strict special master chosen by the bar association. Although Faye's goal is to improve the company's ethics, her strict methods cause conflict, particularly with Harvey, Louis, and Samantha.Louis Litt continues his personal development by juggling his new roles as a spouse and soon-to-be parent with his duties as managing partner. A fresh and satisfying chapter in his life begins when he marries Sheila and they have a daughter. However, after being caught off guard by Faye's power struggles, Samantha Wheeler finds herself fighting to save both her reputation and her job at the company. Additionally, she strengthens her bond with Harvey, who supports her through these difficulties.

The team comes together as the season goes on to outwit Faye without sacrificing their morals. Harvey takes decisive action to defend those he loves, which eventually causes him to consider his professional goals and his own desires. In search of a new beginning, Harvey and Donna make the decision to leave the firm and go to Seattle in order to work with Mike and Rachel in the heartbreaking series finale. Louis continues to lead the company with his family at his side. The characters find closure and welcome fresh starts as the story comes to a positive conclusion.