Lajos Mezei is a middle-aged, insignificant, average man. He works at the post office sorting letters with a machine. His life is but a series monotonous everyday events, but he has a passion that makes him different from his fellow humans. This passion replaces all human relationships and events in his life. He flees into a world of his own, hermetically sealed, which only he can understand and where he therefore feels safe. One day, however, his well-balanced life is turned upside down.

Three thirtysomething chemical scientists, Laci, Gyuri and Kati celebrate the success of their development program before New Year's Eve with drinking for several days. But the morning of New Year's Eve does not bring the expected recognition, because the nice, bald, old director is replaced by a young, bald, but disagreeable one. In a sodden atmosphere it becomes clear that everybody has an axe to grind in the informative discussions.