The story of open-water swimmer Beth French, who wants to swim across seven of the world's most dangerous sea-channels - an extreme challenge called Oceans Seven - and do it in record time: one year. Driven to set an example for her autistic son and by her battle with a life long illness which left her wheelchair-bound as a teenager, Beth travels to far-flung corners of the world confronting jellyfish, sharks, wild weather, hypothermia and mind-numbing fatigue.
But, in an unpredictable and emotional climax, Beth’s burning desire to conquer the open sea comes into heart-rending conflict with a mother’s dreams for her son.