Southern Auvergne, France, 1943.

Occupied France is a dangerous place for Luke and Christine, especially when they are the children of a French mother and a British father. Desperate to escape, the two teenagers embark on a perilous journey back to England to the safety of their grandparents. But there are eyes everywhere.

Luke and Christine band together with fugitive Allied airmen, thinking they will keep them safe and help them on their treacherous journey. But their new partnership could be putting them in more danger than they realize. Especially when there are hostile forces at work determined to scupper any plans to get the teenagers and airmen safely back to England.

With secret operations mounting against the enemy, there is one path which remains unguarded: a risky escape route via the canals. Luke and Christine take refuge on a canal barge and find themselves immersed in the complex Operation Kingfisher.

Can two teenagers make it across occupied France in one piece? Or will betrayal put them and the lives of others at great risk?