The merger complete, Jessica's new partnership with Darby is tested when he assigns Harvey a high-profile client, an oil baroness named Ava Hessington, who has a deeper past with Darby than originally thought. Mike works to reconcile with Harvey, while also trying to manage the fallout from his revelation to Rachel. Meanwhile, Louis convinces Darby to give him quartermaster responsibilities at the firm over his rival, Nigel, but the move backfires when Nigel is put in charge of something even more precious to Louis.