When the New Kids on the Block World Tour stops in Philadelphia, Donnie visits the new Wahlburgers location with his son Elijah and his friends. Donnie and Elijah commandeer the Wahlburgers food truck and drive it to the concert venue. Back in Boston, some loyal patrons ask Paul if they can have their wedding at Wahlburgers. Meanwhile in Los Angeles, Mark attempts to close a business deal to bring Wahlburgers to new locations in the Midwest.

Donnie helps Jenny do test marketing for her new vodka at the Vegas Wahlburgers. As a surprise, Donnie enlists Boys II Men to test the flavors. In Rome, Mark gets a delicious surprise birthday present from his business partner while traveling in Italy.