Description: Nancy Drew goes undercover as a competitive storm chaser in this new mystery, set in Oklahoma during the tornado season. Teams are competing for a $100,000,000 prize for discovering a prediction formula for tornados, but something is not quite right... To solve the mystery of who is sabotaging the storm chasing team, Nancy is thrust into a world of wild weather, high technology, secret conversations, mysterious dealings, and ulterior motives. You are Nancy at her best as you learn about meteorology to help solve the mystery. Rich visuals, dangerous weather, new challenges, unique characters, and new puzzles all combine to make this Nancy's stormiest adventure yet.