Sisters Hannah, Rosa, and Eva are on a mission to sustain picturesque Heatherly Hall, in Yorkshire's Westenbury village. So when they hear the legend of the Jet Set - a necklace with a rare diamond, commissioned by royalty and hidden in their hall - they plan a fundraiser: an Agatha-Christie style am-dram production and treasure hunt.

As if that weren't enough, music superstar Drew Livingston and Bollywood legend Aditi Sharma have chosen their hall for a wedding in just six weeks' time, and the pressure is mounting to pull off the wedding of the decade.

Staging the play, unravelling the mystery of the diamond, and meeting the demands of an A-list bride and groom without their lives unravelling seems impossible. But these three sisters know that with family by your side, anything can be overcome...