Indangered by two hydroelectric dams, the Santa Cruz River is born in the Southern Patagonian Ice Fields and flows into the Argentine Sea, watering the steppe with life. For 4 days of kayaking and 3 camping nights, 27 activists travel from Argentina, Germany, the United States and Chile to row the 360 kilometers of this turquoise snake. A tour through one of the most inhospitable landscapes in the country. A trip. A shout. A spell for the freedom of the rivers.