Summer 2018. Sainte-Soline, Région Nouvelle-Aquitaine. Jeanne – 9 years old – spends her summer holidays with her grandfather Xavier in the old family house where Marie-Louise, her great-great-grandmother aged 9 years old lived in 1918. A century separates the two 9-year-old girls, however a deep bond will arise between them during an adventure and will lead Jeanne to discover another way of life. A century apart, the growth of one will feed the decreasing of the other.