All is not well in paradise. On the remote, rugged and beautiful coast of south Newfoundland, people have for generations enjoyed living close to the land and sea. But recently, huge amounts of plastic waste have been piling up in the region's once-pristine bays and coves. The culprit? Open net-pen salmon farming. Rock - Plastic - Salmon exposes an industry's blatant disregard for the environment and the inspiring characters who are standing up for a cleaner future. A whole ecosystem and the way of life that depends on it are at stake. One thing is clear: the cost of salmon farming is simply too high.