William lost his father - a legendary storm-chaser - to a tornado as a child, and now the family business belongs to reckless tour operator Zane Rogers (Alec Baldwin). Determined to follow in his father's footsteps, William leaves his mom (Anne Heche) behind and teams up with his father's ex-partner, Roy (Skeet Ulrich), to head deep into the churning eye of the most dangerous supercell ever seen.