At the height of World War II, Major Dan Kirby takes command of a Marine fighter squadron in the Pacific. His tough and demanding leadership style quickly leads to friction with Captain Carl Griffin, the squadron's executive officer, who believes in a more compassionate approach to leading men. The squadron faces the daunting task of providing close air support for ground troops and engaging in aerial dogfights against formidable Japanese forces. Tensions rise as Kirby insists on discipline and precision during perilous missions, challenging Griffin’s belief that maintaining good morale is equally important for squad cohesion and effectiveness.

As the squad undergoes repeated sorties, the pilots face grueling conditions and the harrowing realities of combat. Casualties mount, testing the resolve and endurance of these determined aviators. Kirby’s relentless pursuit of victory places strain not only on his relationship with Griffin but also on the entire squadron. Each man must confront his own fears and doubts while grappling with the sacrifices demanded by war. Griffin questions whether Kirby's methods are needlessly harsh or essential for survival under the intense pressures of battle. The stakes are high as they prepare for an attack that could turn the tide of their campaign, forcing both Kirby and Griffin to reconsider their approaches in order to lead their men through the challenges ahead. As the conflict intensifies, their differing philosophies come to a head, shaping the fate of the men under their command.