Mora is 13 years old and intends to become a "gaucho". She questions school and asserts her individuality towards her parents, two environmentalists from Italian-speaking Switzerland whose dream of autonomy turns into a nightmare.

The steppe of Patagonia is swept by a Grey wind - Mora, 13-year-old, wants to be a "gaucho". She rebels against school and affirms herself to her parents, Swiss Italian ecologists, whose dream of autonomy turns into a nightmare. Mora will go deep into the meanders of the steppe to help her only friend Nazareno, an old Mapuche who has lost his horse, Zahorí.