Young Mary Kate and Tina Connors live in Ohio with their parents and extended family. The time is right after World War II. Their father is a lieutenant in the United States Air Force, and their mother fills her days caring for her children. These two sisters find themselves innocently falling into one adventure after another.

Living their Catholic faith is woven throughout their adventures. Block rosaries, daily prayers and weddings are just samplings of how their faith is expressed. Although this book is a fun tale to read, it is also a way to understand how families can live their faith.