The story centers around the protagonist (you) and your wife Fiona. The two of you have been married for over a decade and get along perfectly well. You know you're blessed to have a wife like Fiona, but you can't help but wish you had a more active sex life with her...

Meanwhile your new co-worker Davis is struggling with a similar issue: although frequency is not their problem, him and his new wife Kyleigh both want to take the lead in the bedroom. Davis comes to you with the obvious solution: if the two of you just swap wives, there's two perfect sexual matches instead of two mismatches...
Source: VNDB