1917: When two young cousins, Frances Griffiths and Elsie Wright from Cottingley, England, claim to have photographed fairies at the bottom of the garden, the girls become a national sensation. One hundred years later: When Olivia Kavanagh finds an old manuscript, she becomes fascinated by the story it tells of two young girls who mystified the world. But it is the discovery of an old photograph that leads her to realise how the fairy girls' lives intertwine with hers...