This story is based upon the experiences of two Belgian refugees in World War I. When their parents are marched of by Germans, Jan and Marie are left alone. Now they, along with their dog, have to find their parents!

The Dutch Twins are Kit and Kat, 5 years old and not yet big enough to be called by their real names, Christopher and Katrina. They live in a typical Dutch household, around the turn of the last century. The book follows their day-to-day adventures and accidental mishaps.

The book is the first of a series of stories about twins in different countries, meant to give children an idea of life and customs in various parts of the world.