Stewart becomes certain there's a larger conspiracy against the firm. It’s the first time Sanderson & Yao has ever been involved in a truly dramatic situation, but Dean has shed his “Grinder” persona and refuses to listen to Stewart’s “paranoia.” Instead, Dean decides to focus on being the office intern, so Stew has to take matters into his own hands.

Post-therapy, Dean finds that he has lost the ability to grind. To get it back, he decides to crack the case of the office being ransacked. Meanwhile, in flashback, we see a younger, struggling Dean Sanderson as he must decide whether to embrace a simple life, or pursue his destiny and become the Grinder he was always meant to be.

When Stew learns that his father is guilty, he wants to settle, but Dean tries one of his old "Grinder" tricks to solve the case. Meanwhile, Stew is concerned that he is now "infected" by "The Grinder".

Stewart becomes sidelined at Dean Sr.'s malpractice trial, causing the rest of the Sanderson & Yao team to try and save the firm.