It is 1952, and Krystyna is born amidst the smothering Great Smog of London. Two weeks later, she is abandoned. When she is whisked away to the remote North Devon coast and adopted, Krystyna begins a new life, blissfully unaware of the circumstances of her birth and abandonment. But when she makes a discovery about her origins, the uncovered secret threatens to undermine her fragile relationship with her adoptive mother, and goes on to trouble her throughout her bittersweet life. Many years and two divorces later, a DNA test result provides a clue that will send Krystyna on a journey to find out who she really is. But where will it lead?