An uptight doctor struggles to relate to his troublemaking, laid back son until an experimental potion causes them to swap identities.LAPD Pilot Frank Murphy is assigned as a test pilot for the experimental Blue Thunder police helicopter, designed to pacify riots. But Frank soon begins to suspect there is more to Blue Thunder than he is being told. Orphaned siblings Abby and Loren move to Florida to live with their aunt and uncle to help run their amusement park. They soon find themselves at odds with a local gang of teenage ruffians, forcing them into a confrontation at the amusement park.Defense attorney Kathleen and jury panelist Eddie Sanger work together to prove Kathleen's client innocent in a murder case involving a judge's secretary and corrupt officials.