21-year-old Lidia Litvyak is a fighter pilot in an aviation regiment. Along with her comrades, she flies missions in the most intense sectors of the front, participating in fierce air battles and proving herself one of the most effective aces. In the regiment, she becomes involved with the pilot Alexei Solomatin. Combat victories, losses and personal torments do not change the heroine's strong character, which forever inscribes Lidia Litvyak's name in the history of aviation.