Five girls determined to discover whether their man is really the one have decided to go undercover.

Stripped across one week, their boyfriends are whisked away on a VIP trip to sun-soaked Marbella under the impression they are filming a TV show about being on a mates’ holiday. What they don’t know is that their girlfriends are in the villa right next door watching their every move!

Everywhere the boys go and everything they do is controlled by their girlfriends. Using stealth, technology and a range of comical disguises, and the help of a film crew, the girlfriends go undercover to put their boyfriends to the test in order to answer some important questions about their relationships.

Will the undercover girlfriends get rumbled? Are they really ready for what they might uncover? And when the girls come clean at the end of the week will it bring the couples closer together or push them further apart?

Undercover Girlfriends is co-produced by Twofour and Krempelwood.