The survival of the Bussons, a family of glass blowers, is threatened by the violent political upheaval of the French Revolution. Sophie Duval, the narrator, recounts the experiences of her ancestors as they navigate the shifting loyalties and economic instability of 18th-century France. The family must balance their professional dedication to the delicate craft of glassmaking with the brutal demands of a society in collapse. The narrative framework is presented as a retrospective account, blending historical record with personal memory to examine how the revolution fractured domestic life. The primary conflict arises from the tension between the family's desire for autonomy and the encroaching chaos of the Reign of Terror.

Readers frequently highlight the meticulous research that informs the depiction of the glassmaking industry during the late 18th century. Discussion often centers on the balance between the intimate family drama and the broader, often violent, historical context of the French Revolution. Critics note that the prose maintains a steady, reflective pace that emphasizes the endurance of the characters over rapid plot progression. The atmosphere is often described as grounded and authentic, providing a clear window into the daily struggles of a family caught in political turmoil. Many readers appreciate the focus on the domestic consequences of national change rather than purely military or political maneuvering.