Tom Cavanaugh, an obsessive research meteorologist, is on a quest to ensure the safety of his daughter. Through manipulation of chaos theory, he comes to believe that he is on the verge of forecasting the future through science. Brian, his older, academic brother, must convince Tom that this is a scientific impossibility while staying conscious of Tom's delicate mindset. The film explores the idea that everything that we do, everything that occurs, has an effect on other aspects of our world.