It may be St Patrick's Day, but the Moones are having a different kind of party: Fidelma's wedding. As tensions run high with the heavily-pregnant bride calling the shots, Martin takes his life in his hands when a Coco Pops disaster strikes the all-important dress. It turns out pepper (and a cocktail of many more non-cleaning products) doesn't remove chocolate milk stains after all. But help is on hand from the most unexpected of places, and the wedding will go on.

As Liam begrudgingly hands Fidelma over to Dessie at the altar, their baby decides to make an early entrance, sparking a hospital dash and a St Patrick's Day parade cameo. And with all responsible adult supervision on birthing duties, Martin is left to become host with the most, treating his new Traveller friends to a right royal knees-up. The joviality is short-lived the next day, however, when Martin is less than enamoured with the new addition to the family and Liam discovers how generous he was with the wedding bar tab.