In 1925, a pioneering American general named William "Billy" Mitchell made waves by prophesying the rise in importance of air power and predicting Japan's likely attack on Hawaii. His bold claims were met with resistance from high command, leading him to speak out publicly against what he saw as criminal negligence and disregard for the air service. The consequences were dire: Mitchell was court-martialed, found guilty, and stripped of his rank and duty for five years. This 1955 biographical drama brings to life this pivotal moment in American military history, starring Gary Cooper as the embattled general who refused to be silenced.