IT'S A CLIMATE CHANGED WORLD, and the River Rhone has flooded the town of Arles in France. Helen and Isha leave to join their daughter and eleven-month-old granddaughter, Ayo, in England. In Calais, Isha, who has Ugandan-Asian ancestry, is told that new rules mean she will be immediately deported if she crosses the Channel. Faced with a terrible dilemma, Helen chooses to stay with her. Homeless and stateless, they seek refuge in a friend's Swiss...