Growing numbers of British women are using donor sperm, with many of them turning to Denmark, the new sperm capital of the world. It has become a huge global business and is now one of Denmark's biggest exports. Each week, straws of frozen Danish sperm are shipped out to over 70 countries. Award-winning film-maker Sue Bourne's film follows four women as they try to make a baby using Danish sperm. For all of them it turns out to be an extraordinary and hugely difficult and moving journey in a world where women no longer need men to create a family.