Illegal gold mining has become one of Colombia's most destructive crimes, run by cartels that poison rivers with mercury and strip the country's most biodiverse land bare. This film follows the Colombian Army's first military brigade created solely to fight illegal mining, riding along as more than 200 elite commandos prepare for a raid codenamed Operation Exodus. Black Hawk helicopters, drones, and zodiac boats move troops into position along Colombia's second largest river, where the mission is to stop mercury spills before they reach the water. Cameras stay close through the planning sessions, the physical training, and the tense hours before deployment, showing soldiers as they brief routes, check gear, and weigh the risks of confronting armed miners in remote jungle terrain. The film treats the brigade's work as both a military operation and an environmental rescue effort, tracking how gold extraction funds organized crime while wrecking the ecosystems around it. It is a ground-level look at a fight most viewers never hear about, framed through the people carrying it out.