Act as a seasoned screenwriter with expertise in high-stakes thrillers. Craft a compelling story about [PROTAGONIST NAME], a [PROFESSION/ROLE, e.g., disgraced nuclear engineer or rogue journalist], who must race against time to prevent a catastrophic nuclear meltdown at [LOCATION, e.g., an aging power plant or secret military facility]. The protagonist must overcome [PERSONAL FLAW/OBSTACLE, e.g., past failures, bureaucratic red tape, or a personal vendetta] while navigating [COMPLICATING FACTOR, e.g., a conspiracy, natural disaster, or betrayal]. The story should blend technical realism with emotional depth, culminating in a tense climax where the protagonist must make a [MORAL CHOICE, e.g., sacrifice themselves or expose the truth]. Include vivid descriptions of the setting, high-pressure decision-making, and a morally ambiguous antagonist.