It's Christmas in Finglas once again, and this year Cathy has a new boyfriend, Boris. A last-minute change of plans leaves Agnes babysitting the widower’s twins while he and Cathy head to Foley’s for a quiet, romantic drink. Not everyone is convinced he’s right for Cathy, and there are even suspicions that he might be a vampire. But it’s not Boris that Agnes is worried about; she has her own concerns over his creepy twins.

Suspicion surrounds Cathy’s creepy boyfriend, Boris. Buster and Dermot are convinced he is a vampire and hatch a plan to save Cathy, which leaves her mortified. Sharon has boyfriend troubles of her own, and Father Damien has been called away to tend to some depressed chickens. Meanwhile, Buster convinces Agnes she should have her antique vase valued. Who knows how much it could be worth? After all, it has been handed down through generations, and she plans to leave it to Cathy as her inheritance.