Long before Doctor Fingal Flahertie O'Reilly became a fixture in the colourful Irish village of Ballybucklebo, he was a young M.B. with plans to marry midwife Dierdre Mawhinney. Those plans were complicated by the outbreak of World War II and the call of duty. Assigned to the HMS Warspite, a formidable 30,000-ton battleship, Surgeon Lieutenant O'Reilly soon found himself face-to-face with the hardships of war, tending to the dreadnought's crew of 1,200 as well as to the many casualties brought aboard.

Life in Ballybuckebo is a far cry from the strife of war, but over two decades later O'Reilly and his younger colleagues still have plenty of challenges: an outbreak of German measles, the odd tropical disease, a hard-fought pie-baking contest, and a local man whose mule-headed adherence to tradition is standing in the way of his son's future. Now older and wiser, O'Reilly has prescriptions for whatever ails...until a secret from the past threatens to unravel his own peace of mind.