(ALWAYS LISTEN TO YOUR MOTHER)..., as four sisters had to learn the hard way in this Sci-fi horror thriller. Their elderly mother, Hattie Lee Davis, tried to warn and tell her daughters, the sheriff's, the media, and their small knit community that it was extremely dangerous to cut the grass of her lawn. Her detailed claims and confrontations with the monstrous creatures, that grows when her grass is cut, is ignored and laughed at by all. But she gets the last laugh as most of the world eventually sees live footage of the creatures they once laughed about, and thought was just the figment of an old crazy lady's imagination.