Sarah has everything she ever wished for; she lives with her gorgeous boyfriend and their cat in Sydney and life couldn’t be better. If only she wasn’t so anxious about turning the big 4 0.

Meanwhile Cat is happily loved-up with Jean-Luc, except she lives in London, and he lives in Paris. She loves their long-distance relationship so why is she worrying about their future.

But a surprise wedding proposal is about to change everything for these sisters. And with all their family and friends gathering at a vineyard in Tuscany to celebrate, love, laughter and mayhem are about to ensue.