After a falling-out with Rutherford, the guys are recruited by Roxie's rival event planner – and former assistant – Emily Corgy (guest star Erinn Hayes) to play an "End of the World" party. The guys don't feel good about the career move after learning Tommy and Emily have started dating. Worlds collide when they learn the event they're scheduled to play has been double-booked with another "End of the World" party thrown by Rutherford. Even worse, it's headlined by Mother of the Bride's rival – the Def Leppard tribute band Armageddon It (fronted by guest star Ken Marino). It's a recipe for disaster. Donald Faison returns as guest star.moreless
Roxie's high school nemesis Vanessa (guest star Molly Sims) hires her to plan an adult prom. Wedding Band hires a female singer for the event. Stevie dates Roxie's florist Violet who have a special sex move.
With no choice, Eddie enlist Tommy to babysit his kids. Tommy has to go with kids for rock star class and miniature golf. He also have to attend a bachelor party of Rachel's fiance, Adam. Adam's best man Cooper turns out to be co-worker and rival of Eddie.
The band helps 3 nerds get the girl of their dreams by playing at their party.
Tommy's father Jack is back in town with his young girlfriend and to marry for the sixth time. To be sure his father is not making another mistake, Tommy tries to tempt him by sending other women. Meanwhile, a blogger shadows Roxie to write about wedding planner. She lies to blogger that Barry is the groom when a bride comes without a groom.moreless
Tommy, Eddie, Barry and Stevie are just four regular guys with day jobs. But when the weekend comes, they become "Mother of the Bride", one of the most hardworking wedding and event bands in Seattle struggling to play the big parties. When Tommy is approached by the woman who broke his heart and is asked to play her wedding, the band has a chance to make a name for themselves with the biggest party planners in town, Rutherford Events.moreless
Rock star Declan Horn (guest star James Marsters) approaches Mother of the Bride band members when they are playing at Octoberfest. He wants to hang out with them. So he attends their next event, a Sweet 16 party and a private key party letting his inner-rock animal out.
Tommy convinces his band to take instruments of Courtney Love which are at Steve's studio, for a spin for their new event. They run-in with a boy band and borrowed instruments are stolen by them. Before Courtney finds out, the gang must recover the instruments. Roxie throws a charity event for her personal cause.moreless