Growing up in a seaside town, Clare O'Brien and David Power shout their hearts' desires into the echo cave, praying that their destiny will lead them far away from Castlebay, the small town in which they live. Years later, in Dublin, their paths cross again - David, following in his father's footsteps, is studying medicine, and Clare has won a scholarship to University College. Eventually Castlebay draws them back - and it is against a backdrop of empty grey skies, sea-spray and wind that this drama of ambition, betrayal and love finally reaches its turbulent conclusion...