Melissa is not happy. One minute she's engaged to handsome young Bill Harding, who has a promising career as a TV weatherman ahead of him. The next minute, she's cowering in a pickup truck while tornadoes blow houses at her. And Bill can't wait to find another tornado. “When you told me you wanted to chase tornadoes,” she tells him, “I thought that was a metaphor.” It is a metaphor, Melissa, but not for Bill's dream. It's a metaphor for “Twister,” a movie that chases tornadoes with such single-minded dedication that plot, character, dialogue and even your engagement all disappear into the Suck Zone--which is, we learn, that part of the tornado that sucks up everything in its path. By the end of the film, we have seen trees, TV towers, drive-in theaters, trucks, houses, barns and even cows sucked up by the Zone. Well, maybe only one cow. “I think it's the same one, coming past again,” Bill tells Jo.