在世界上绝大多数的供水被致命污染之后,一小群幸存者在某稀有干净水源附近避难,并介入了一场致命的猫鼠游戏,为了活命,必须与入侵者一战。After the vast majority of the world's water supply is lethally contaminated, a small group of survivors who have taken refuge near a rare clean water source are thrust into a deadly game of cat and mouse and must defend their lives from infiltrators who aren't what they seem.