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.

The plan for global expansion continues as the Wahlberg brothers plan to break ground on a new Wahlburgers in their very own hometown of Dorchester. Chef Paul continues to work on the "Express Model" and thinks it's ready to do a test run at the Dorchester groundbreaking. But tensions reach an all-time high, when Donnie finds out that Paul made an executive decision on the Wahlburgers beef packaging without the brother's input. And Alma finally starts her memoir... again.

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.

Mark is hosting an NBA All-Star weekend party at their newest addition, Wahlburgers-Sunset. Here, Mark auditions a new technology that allows the brothers to virtually pop-up at any Wahlburgers location from anywhere in the world; connecting them even more with their fans and customers. But, this tech may not be ready for prime time. At the same time, Jenny and Alma hit the town and have a girl's night out while attending Jenny's Blondie's signing. And, Paul continues to crack the code on the Express Model by fine tuning his perfect four-minute burger.

For over a year Mark has been trying to make a deal to put Wahlburgers in Bass Pro Shops. To show CEO Johnny Morris that the boys from Boston can serve the Bass Pro customers, Paul heads to Big Cedar lodge where he gets a crash course in what being an outdoorsman is all about. But will it be enough to close the deal? Alma gets creative, and a little bit wild making a signature Mother's Day cupcake for the restaurants. And when Donnie meets a Wahlburgers server who has big dreams of becoming a musician, it reminds Donnie that he owes his career to someone else's generosity, and this is his chance to pay it forward.

The new Wahlburgers in Pittsburgh is facing a unique challenge where their sports team rivalries have put a dent in the restaurant's success. Paul and Donnie fly out to try to build a bridge with the community by diving in to the Pittsburgh culture in hopes of infusing that flavor in to this store. Meanwhile, Mark is building his own boardwalk empire by opening a Wahlburgers inside an Atlantic City casino before he heads out to join his brothers at the giant Pittsburgh VIP event. Will the city embrace these Boston boys or send them packing?

As Mark arrives for the VIP party celebrating the opening of the newest Wahlburgers in Taylor, Michigan, a freak ice storm knocks the power out, and threatens to derail the festivities. Paul gives the CVAP the ultimate real-world test on baseball season's opening day, at the Fenway location. And after many months of being closed, Donnie makes it his personal mission to reopen the Coney Island Wahlburgers.

Over 15,000 fans greet Mark, Donnie and Paul at the largest grand opening in Wahlburger's history - inside the infamous Mall of America. While there, the brothers discuss the future of Wahlburgers where Mark and Donnie try to convince Paul on expanding their product line, "Wahlburgers at Home".

Mark strikes a deal that will put Wahlburgers on military bases both home and abroad; Donnie learns about his local town's culture in order to gain the St. Charles City Council's approval to build his own Wahlburgers.