Evacuated from their home, two teenage sisters unite with fellow survivors and escape London by river to embark on an odyssey across the badlands of Britain.

As Kasia takes on her first assignment as an agent, Rajib’s military values are tested. Meanwhile, a familiar face comes to David’s aid

The war reaches the sands of the Egyptian desert while bombs fall on Manchester, and Harry introduces an explosive force into Robina’s household, leaving her reeling.