It's just days after the Folkapalooza concert and having saved the world, Twenty Major is looking forward to some R&R but little does he know that his murky past is about to catch up with him ...
Notorious Dublin gangster Tony Furriskey is calling in his marker. Years ago he helped Twenty and Jimmy the Bollix out of a hole and the time has come for them to repay the favour ... or end up swimming with the Dublin Bay prawns.
Tony's youngest daughter, is about to marry a man he thoroughly disproves of and it's down to Twenty and Jimmy to make sure the wedding doesn't happen. They must follow the young man and his pals to Barcelona where the stag weekend is taking place, infiltrate the stag party and make sure, one way or another, that the wedding doesn't happen.
But will Twenty's Barcelona past catch up with him? Which one of the group finds true love at last? And can they put down the cheap mojitos long enough stop the wedding?
In the city of Gaudi and Picasso, Twenty, Jimmy, Stinking Pete and Dirty Dave are more gaudy and pickarse-o as they try and enjoy the Mediterranean sun while getting the job done.