Dean and Stewart's mother, Lenore, makes a surprise visit, which causes Dean to panic, because Bonnie has never approved of his lifestyle. Meanwhile, Stewart is desperately trying to get reservations to the hottest restaurant in town for his anniversary dinner with Deb. With his ex-wife in town, Dean Sr. thinks he should get back into the dating scene and gets help from Ethan and Lizzie.

Dean Sr.'s malpractice trial is finally at hand and it will come to a surprising conclusion when Stewart gets sidelined, leaving it to the rest of the Sanderson & Yao team to save the firm and find out who has been the secret mastermind behind Cory Manler and Dean Sr.'s case. Stewart is concerned that Dean's instincts and Grinder-isms won't be enough to win the day, and Dean is offended by his own brother's lack of faith.