Mark, Donnie and Paul have big plans for Wahlburgers' ever-expanding burger empire. Chef Paul is working on getting the right equipment and their burger times down in order to step in the fast food market with their "Express Model," and Donnie risks a personal mission to open a Wahlburgers in his home town of St. Charles. Meanwhile, the brothers disagree on the packaging of their own brand of retail beef, a financial risk that puts real world business pressure on the family like never before.

Paul is caught off guard when he is selected by Mark to be the pitch man for a huge business partnership and feels that Mark is pushing the Express Model too fast for his comfort. In an initiative to bring Wahlburgers out of the "indulgence" category and into a healthier market, Mark, Donnie and Paul are out promoting the newest menu item, The Impossible Burger. Meanwhile, Alma dons her green hard hat and takes charge in her new role of foreman at the Wahlburgers Dorchester construction site.