The "Lauca" World Biosphere Reserve is a unique biodiversity zone on the planet. Located in the highlands of Chile, next to the border with Bolivia, it is being contaminated by abandoned mining tailings and destroyed by the unchecked exploitation of the borax mining industry that threatens its natural resources. A prominent fly fisherman, Gabo Benoit, travels these solitary routes on his mountain bike, in search of a unique and magical place to flyfish in. On this route to the "Lauca" Park, there are enigmatic stories about the abandonment of this area, the difficulty of life of the last inhabitants of the region and the political maneuvers that have led to the use of the Chilean highlands as a landfill of tailings and mining waste at the expense of its natural wonders. On this trip, Gabo Benoit, together with Fundación Relaves and local activists, reconstruct and reveal the history of how this situation was reached, inviting us to be part of the magical highlands and of the World Biosphere Reserve.