What are the odds that the stranger sitting next to you on a plane is destined to change your life? Especially when they appear to be your opposite in every way.
She's a life-long optimist, looking for her soul mate in every man she meets; he's a resolute cynic - cruel experience has taught him never to put his faith in anyone.
People can surprise you. In the time it takes to fly from London to Chicago, each finds something in the other that they didn't even realise they needed.
Their pasts are such that they can never make one another happy and it's when they get off the plane, that their true journey begins...
