A children's story of the daily and adventurous episodes in the lives of Renee and Albret Martineau, young twin sisters in a seventeenth-century French Protestant family. The episodes follow the twins and the rest of the Martineau family as they work, worship, commune, and suffer persecution together. The story aims to portray the ideas and historical details common to Huguenot life in La Rochelle, France, 1685, a tragic year whose final quarter brought the full wrath of Louis XIV.