It's summertime in Boston and the Wahlbergs are kicking it off with their annual family reunion. This year there is a lot to celebrate. It's also Patriots' Day and Jim, brother of Mark, Donnie and Paul, is in town to run the Boston Marathon. The whole family is eager to rally around and show their support for Jim as well as a couple of Donnie's New Kids On The Block band members who are running the race this year. To honor the occasion, Alma wants to have a personal medal made for Jim but complications arise when she tries to have the medal delivered in time for the race. Paul plans to help out preparing food for the big reunion after the race but first he must learn the secret recipe for Uncle Archie's meatballs, a recipe that he is quite protective of and is not so eager to give out. Meanwhile, Mark offers to set up his hometown entourage, Johnny "Drama" Alves and Henry "Nacho" Laun, with an acting job, which turns out to be very different than what they had in mind.

When Donnie asks Paul to join a fantasy football league, Paul decides to enlist the help of New England Patriots' Rob Gronkowski. In return, Paul gives "Gronk" a cooking lesson to prepare for an important family meal. In LA, Mark takes Johnny "Drama" to the dentist to help him take his teeth, and his acting career, to the "next level." And when Alma gets a new smartphone, she quickly becomes addicted to a host of new apps--much to the chagrin of her boys.

Mark is in Hong Kong to promote his film--and Johnny "Drama" and Henry "Nacho" are along for the ride. During their stay Mark sends "Drama" to a casting agency to audition for a local commercial. Meanwhile, "Nacho" uses his stomach of steel to sample local delicacies and scouts out a new location for a future Wahlburgers restaurant.

The entire Wahlburg clan gears up for their favorite local holiday, Dorchester Day--an event that has become the backdrop for some of the family's most infamous pranks. While Paul insists that the family forgoes the hijinks this year, his nephew Brandon has other plans--and he has his sights set on Paul's assistant, Kari. Meanwhile, Donnie enlists Johnny "Drama" and Henry "Nacho" to paint a shed in his backyard while he's away on tour and the process becomes a joke all its own.

During the New Kids on the Block's European tour, Donnie gets homesick so Jenny invites Paul to London. Paul attempts to get his brother to enjoy English cuisine, but ultimately cooks for the entire band.

Paul must navigate a jam-packed day including a visit to an oyster farm, an interview with a reporter and a skateboarding event for his son. Right when he thinks he has things under control, Mark adds fuel to the fire by insisting he meet the mayor of Boston to discuss a new Wahlburgers location. When the visiting reporter becomes enthralled by Alma's Wahlberg childhood stories, Paul becomes terrified about just how candid this profile may become.

At Donnie's suggestion, Paul decides to take up woodworking as a hobby to help manage the stress of running the restaurants. Alma, who is terrified Paul is going to hurt himself, insists his older brother Arthur--a carpenter himself--try and protect Paul in the dangerous endeavor. Meanwhile, Mark decides to let Johnny "Drama" and his funk band, perform at the Boston premiere of his new movie. "Drama" gets nervous when he thinks his band may not be up to the task.

When Mark notices that the restaurants are busier than ever, he asks his bodyguard Scott to go to Boston to look after Alma. Scott soon finds himself out of his element when Alma turns her temporary protector into her new best friend. Meanwhile, pop duo MKTO visits Wahlburgers while on a tour stop and Paul gets a chance to provide his daughter Madison with the night of her life. Johnny "Drama" dusts off some of his old music and hustles himself an opportunity to perform on stage with MKTO.

Paul and his brother Bob decide to take their sons Ethan and Oscar on a fishing trip in attempt to start a new family tradition. What starts as a leisurely trip down memory lane is cut short when they ditch the boat for a local paint ball course and the day becomes a cutthroat contest of kids versus dads. Meanwhile, Alma finds out that her grandson Brandon is dating two girls at the same time and her decision to interfere becomes a lesson in modern day relationships.

An argument over whose job is tougher leads Donnie to challenge Paul to let him run the restaurant for the day. The work proves to be far more taxing than Donnie expected, and his experiments with new recipes do nothing to soothe Paul's anxiety. Meanwhile, Arthur offers Johnny Drama a co-starring role in an independent film.

In the fifth season premiere, Mark suggests Johnny Drama make a music video to advance his career and enlists music mogul Sean "P. Diddy" Combs and movie director Peter Berg to help.

Mark travels to Philadelphia to host the Festival of Families celebration honoring Pope Francis; Brandon gets his first chance to join the poker game at the Wahlberg family reunion.

Donnie needs a hand after he promises to bring Wahlburgers to his "Blue Bloods" co-star Marisa Ramirez and the rest of the TV series' cast and crew; Mark sends Paul to Costa Rica for a much-needed vacation.

Donnie surprises Alma and the rest of the New Kids on the Block parents with a party bus for their Boston concert; Paul flies to Los Angeles to meet a billionaire investor looking to open up Wahlburgers throughout the Middle East.

Paul visits Mark in France, where he tours Paris and gets the opportunity to prove that his cooking skills are as good as those of any French chef.

Prankster Mark gets a taste of his own medicine when he plays golf against Masters Champion Bubba Watson; Alma, Bob and Brandon visit the former hospital where Alma use to work as a nurse.

Champion racer Dale Earnhardt Jr. invites Mark to a NASCAR event in New Hampshire; Paul and Bob deliver Wahlburgers to NASCAR drivers Greg Biffle and Ricky Stenhouse Jr.; Brandon flies out to Chicago for a singing lesson with Donnie.

Wahlburgers takes on local rival Tasty Burger in a game of softball at Fenway Park, the historic home of baseball's Boston Red Sox; Alma volunteers to manage the team, but Mark soon decides to take charge.

Mark invites the brothers and their children to the New England Patriots' practice facility for game of touch football in front of the team's owner, Robert Kraft; Donnie takes Elijah, an avid drummer, to visit the Zildjian cymbal factory

Donnie creates a virtual reality experience of the Hingham Wahlburgers to give customers a taste of the atmosphere. Elsewhere: Mark introduces Drama to an up and coming Boston rapper.

Mark works with the franchisee of the new Detroit Wahlburgers to ensure the location opens up in record time; Donnie invites Paul to help him scout for potential restaurant locations in downtown Chicago, then pulls a prank on his brother.

Donnie takes Bob and Oscar to scout a potential Wahlburgers location in St. Charles, Illinois, and pulls out all the stops to convince Oscar to make Chicago his college town; Mark flies to Toronto for the premiere of his film, Deepwater Horizon (2016).

Paul organizes a burger-eating contest at the Coney Island Wahlburgers to coincide with Donnie throwing out the ceremonial first pitch at a Brooklyn Cyclones baseball game; Bob's daughter asks him about their family heritage for a school project.

Mark meets Paul in Scotland and informs Paul that he's offered up his chef services to Lady Hopetoun and her guests at her family's palatial estate. Paul navigates the winding roads of the Scottish countryside and experiences the culture when he interacts with the locals at a traditional tavern before putting on the feast. When Alma learns that she must take the driver's test again in order to renew her license because she is turning 75, Bob offers to help prepare her for the test.

While filming Transformers 5, Mark tries to wear Wahlburgers merchandise in some high-octane scenes.