The entire Wahlberg clan has big plans for the hometown burger joint that bears their name, but one Wahlberg might be looking to move faster than the others. When head chef Paul Wahlberg and his younger brother Donnie find the perfect second location for Wahlburgers near Fenway Park, it becomes Paul's task to convince their baby brother Mark, who has dreams of International locations, to agree. Back on the home front, Wahlberg matriarch Alma tries to convince Paul to finally hire an assistant in an attempt to make things easier for her overworked son.

In the Wahlberg house, 5 o'clock is always dinnertime. When Donnie brings girlfriend Jenny McCarthy home to meet his mother, Jenny falls in love with Alma's famous tomato sauce. Troublemaker Donnie decides to stir the pot by instigating a "sauce-off" between Ma and Paul. As the competition heats up, Paul also has his hands full creating a special "Burger of the Month" for Jenny. With Mark as the deciding vote, who will win the Wahlberg's first annual sauce competition?

Paul gets a call from Mark informing him that he just bought the perfect site for the next Wahlburgers location. The thing is...it's in Canada. So, Paul must drop everything and meet his brothers in Toronto to check out the new place. But, when Paul gets there, he quickly realizes that the new location isn't exactly what he expected it to be.

When Paul takes the day off work to play a round of golf with Mark, he leaves their mother, Alma, in charge of the day shift at their second restaurant "Alma Nove" -- much to her delight. As Paul and Mark talk business and engage in their usual game of brotherly harassment, Alma uses her newfound position to finally make a few changes to the restaurant without Paul's interference.

Mark solicits his cousin, Johnny Drama, and friend, Billy Leonard, to take Paul out for a weekend of physical activity when he sees that Paul is putting on a few extra pounds. Back home, Alma solicits the help of Kari and Mackenzie to help clean out her garage. In the search, they stumble across some of Mark and Donnie's most treasured (and embarrassing) childhood memorabilia.

Alma Wahlberg's recipes have always been the talk of her family. So, after years of requests, Alma finally attempts to gather all of her kids' favorite recipes and share them with the public. At Wahlburgers, Mark is up to his old childhood tricks when he hooks up with old buddy, Nacho Extreme. Nacho, the human compactor, will eat anything--for a price. This time around, Mark challenges Nacho to eat a very different kind of burger.