It is January 1944. Pilot Cliff Stephens and linguist Laura Pembury meet for the first time on a rain-swept night in Hampshire and are immediately attracted to each other. They meet again three times and their relationship blossoms. The future looks inviting until Cliff is posted missing over the English Channel.

Unknown to those searching for them, Cliff and his crew are picked up by a German patrol vessel. Meanwhile, a storm in the Channel leads to the search being called off, and Laura believes Cliff has been killed.

Now a prisoner-of-war in Germany, Cliff has no address for Laura, and the need for stringent security means he cannot write to her at the wireless station where she is based. It seems that their relationship is over.

Destiny, however, follows its own agenda.