Renvoyée pour la mort d'un stagiaire, elle paie 1€ pour une ruine cachant un lourd secret

Margaux Delacroix, a fourth-generation firefighter, saves lives until the night a young trainee dies under her command. Unjustly accused and dismissed from the force, she has only her loyal dog left. An unusual advertisement draws her to Fontnègre, a forgotten village in the Cévennes: a burned-out cottage, offered for a symbolic one euro. Beneath the rubble, she discovers a long-gone glassworks and the notebooks of its last owner, who died in an arson attack thirty years earlier. Learning about this forgotten trade, she understands that the same man orchestrated both tragedies to protect his own interests. Hunted, she conducts her investigation using her firefighting skills, until one festive night when her dog saves a child and provides the crucial evidence. She emerges exonerated and breathes new life into the village.