Fletcher Reed is a fast-talking attorney and habitual liar. When his son Max blows out the candles on his fifth birthday cake, he has just one wish-- that his dad will stop lying for 24 hours. When Max's wish comes true, Fletcher discovers that his biggest asset-- his mouth-- has become his biggest liability.

Baseball-size hail, violent winds, and churning tornadoes make supercells deadly, and when William Brody was a boy, his father a legendary storm-chaser was killed by one. Now, the family business belongs to Zane Rogers, a reckless tour operator who sees dollar signs where others see storm clouds. When his destiny arrives in the form of one of the most powerful storms on record, William leaves his mom and home behind to team up with his father's ex-partner,...