Ageing swingers Donald and Jacqueline Stewart return to the Hotel Solanas in Benidorm for another holiday. New guests this year are middle-aged virgin Geoffrey, who calls himself the Oracle because of his quiz general knowledge, with his mother - or P.A. as he terms her - gay couple Gavin and Troy, young marrieds Kate and Martin who have been going through a sticky patch, and the Garvey family. Lazy Mick and his long-suffering wife Janice have a lippy teen-aged daughter Chantelle and inquisitive little son, Michael. Janice's sun-burnt, chain-smoking mother Madge, who rides around on a mobility scooter has paid for the holiday for them all. Janey York is the jolly if half-hearted holiday rep and then there is Mateo, a sexy young waiter with an eye for the ladies. . . Kate in particular.

Due to a misunderstanding Donald and Jacqueline assume that Madge is up for group sex with them and she gets a shock when she answers an invitation to go to their room. They have a lot of apologizing to do. So does Troy, who gets drunk and ends up having sex with Mateo, which Gavin observes. Janice believes that her husband is planning to get off with Susie, a single woman who is following him around.