After a falling-out with Rutherford, Mother of the Bride is recruited by her former assistant and event planner Emily Corgy to play an 'End of the World' party. Worlds collide when they learn the event has been double-booked with another 'End of the World' party thrown by Rutherford. Even worse, it’s being headlined by Mother of the Bride’s rival – the Def Leppard tribute band Armageddon It...
The band meets a rock star who claims to be a fan, but his enthusiastic support proves to be a liability.
Tommy and the guys are determined to keep a divorcing couple together and go rogue from Rutherford's event plan.
Rutherford books Mother of the Bride to play a corporate event for Eddie's conservative employer.