It is the year 1914 in rural West Kentucky. Twelve-year old Emma Mae and her ten-year old brother Edward have traveled across the county to visit their church friends Evelyn, aged eight, and her brother Ted, aged eleven. While visiting their large farm, unusual happenings occur, including the disappearance of the family dog and the threat of a kidnapping. As the children search for the missing dog, a strange sound lures them to the top of the farm windmill. When they reach the top, the wind is so strong they are blown off . . . only to land beside a Dutch windmill with four huge blades in the country of Holland! After getting to know a Dutch family there, they discover that there can be danger, even in another part of the world. Will they be able to save the Dutch princess from kidnappers? And what about saving the other ''princess'' when they return home? IF they return home?