An exclusive Golf Club employs Multinational Biotech to melt the snow and modify the grass genetically so that its members, who are wealthy, can enjoy golf year-round. This results in the contamination of water, which eventually turns most residents into zombies. Andre, a teenage boy, is one of few survivors. He watches the disease rapidly spread, and is left alone with Annie, his little sister. They embark on an adventure with Dan, the local security guard, and self-proclaimed survivalist. They race against time to discover the cure before their loved ones turn into grass.