When private investigator Leo Street is sent to County Kildare to spy on the wife of a loathsome client, she's delighted to be getting away from rainy Dublin and her hopeless, permanently resting actor boyfriend Barry. The one catch is she has to masquerade as a member of a cookery course and the only piece of culinary equipment Leo can handle is a tin opener - Weekend Entertaining Part 1 is daunting to say the least. As she strips away layers of marital infidelity - not to mention several other scandalous secrets - she battles with bread-making and brulee. But where will it all end - in triumph or tragedy?