Donnie and Mark decide to play a practical joke on big brother Paul by telling him that they want to create a Wahlburgers jingle. They go even further by recruiting the help of their friend Joey McIntyre (New Kids on the Block.) Never one to miss an opportunity, when their close family friend (and favorite "cousin") Johnny Drama hears about the possible jingle, he also wants in on the writing process. As the gag gains momentum, Paul, the control freak, is overwhelmed by the triple team. While her sons are busy playing tricks on each other, Alma, the shopaholic, is stumped as she tries to find the perfect gift for Donnie's new girlfriend, Jenny McCarthy.

Mark's in for a wild time when he brings his real life entourage to LA for a little bit of fun in the sun. While there, Johnny Drama gets the chance of the lifetime when Mark surprises him with an audition for his new film. Back in Boston, Paul is fending off hopeful screenwriters who bombard him with hopes of their work falling into the hands of his little brothers. While Paul always throws the scripts in a box and forgets them, he soon finds out that Alma has been secretly reading them and sharing her thoughts with her famous sons--much to their chagrin.