Their births separated by almost a century ... Rosie Maconochie - a young woman with a dark secretSam - an infantryman fighting to survive on the notorious Western Front A chance discovery in an old bookshop seems, at first, quite insignificant. But when Rosie's circumstances take a sudden, terrible turn, her tenuous hold on life is shaken to its roots. Soon she begins to find her journey uncannily mirrored in a manuscript penned by an unknown soldier. Both of them struggling with the issues of mortality and meaning, both staggering helplessly towards breaking point - what awaits them as they go over the top?