This one needs a BritRiff. Description from IMDb states: "Mary and Statton's one-night stand at a hotel gets interrupted by a robbery, and the complete strangers are forced to help each other navigate the seedy underbelly of a sleepy Welsh island in order to get back their stolen property." See: https://www.imdb.com/title/tt7250378/

Actors like Peter Davison and Mark Bonnar appear in this rather goofy, occasionally bizarre rom-com. The talk about the stripping nun that is never seen on-screen definitely makes it exciting.