A couple's wartime separation provides an unexpected tonic for their romance in this drama. Robert and Catherine Wilson (Robert Donat and Deborah Kerr) are a married couple whose relationship has hit a dry patch; neither of them have much enthusiasm for each other, and when Robert is drafted into the Royal Navy during the war, they almost welcome the separation. Life in the Navy gives Robert a more easygoing outlook on life, especially after he has a brief fling with Elena (Anne Todd), a nurse who recently lost her husband. On the home front, Catherine makes friends with Dizzy (Glynis Johns), a free spirit who encourages her to smoke, wear makeup, and enjoy a dalliance of her own with a man named Richard (Roland Culver). After the end of the war, Robert and Catherine both dread their reunion, but each find that they're pleasantly surprised with the changes that time has brought to their mate. Perfect Strangers was also released under the highly appropriate title Vacation from Marriage.
by Mark Deming synopsis