Ireland, June 1944. The crucial decision about the right time to start Operation Overlord on D-Day comes to depend on the readings taken by Maureen Flavin, a young girl who works at a post office, used as a weather station, in Blacksod, in County Mayo, the westernmost promontory of Europe, far from the many lands devastated by the iron storms of World War II.

England, 11th century. William the Conqueror (ca. 1027-1087) wins the Battle of Hastings (1066), changing the shape of medieval Europe and the course of English history. An account of the life of the extraordinary Norman warrior who became king.