Behind every great love song is a great love story. It's been seven years and Diana is finally ready to marry her long-time fiancé, Arie; she's even composing a beautiful love song for him, working on it in hotels and concert halls as she criss-crosses the world as a classical pianist. Before she can finish it, though, tragedy strikes - and Diana is lost to Arie forever. But her song might not be... In Australia, the world has gone quiet for Arie and he lives his life accordingly, struggling to cope with his loss. In Scotland, Evie is taking stock of her life after the end of another lackluster almost-relationship. Years of wandering the globe and failing to publish her poetry have taken their toll, and she might finally be ready to find what her travels have never been able to give her: a real home. As Diana's song is passed from musician to musician, winding its way around the world, it just might bring these two lost souls together.