What is true happiness? London 1990. When Kaisa suffers a third miscarriage, her submarine officer husband Peter is devastated. Kaisa, who has chosen a job with the BBC over the traditional life of a Navy wife on a marriage patch in Scotland, feels guilty. Has living apart from her husband to pursue a demanding career, contributed to her inability to keep hold of a baby? But childlessness pales into insignificance when her old friend Rose tells Kaisa about a former lover's serious illness. The consequences of Duncan's condition could wreck Kaisa and Peter's future. And then life takes another heart-breaking twist … Can love conquer all?