Twins Katy and Rachel don't know much about each other's lives anymore.
Rachel thinks that Katy is a high-flying event planner in London, while Katy thinks that Rachel lives in idyllic marital bliss in the countryside.
Each sister believes the other has created a perfect life - but the truth is that neither twin has the life she pretends she does.
And when these sisters unexpectedly swap houses for a week, they're in for a big shock.