Fleeing the city at the beginning of the pandemic, two families are cramped together in a small century-old country house. Winter seeps through the walls, the wallpaper is peeling, and mice make their nest in the piano. Without phones or Internet, they turn to the outdoors, where a new language unfolds, a language of fireflies and clover. The five children explore nature and its treasures, while our narrator, Anaïs, turns to the eccentric neighbors and her own family history to find peace and meaning in the middle of her life.