Kristina, a student at an English university, comes on vacation to the house of her father, a successful businessman. A man has long lost his wife and introduces his daughter to his new love Natalia. However, the flighty, spoiled, accustomed to luxury and easy money, Kristina does not want to accept her.

The Eastern Front, 1943. Two Soviet pilots, straight out of training, join a veteran fighter squadron on the front line.