A recognized mathematician proves to the plant management that the new pipe rolling mill needs to be stopped and improved. The conflict ruins his daughter’s personal life when she is abandoned by her fiancé, the head of a pipe-rolling shop, a careerist and a coward. Yielding to the persuasion of a friend, the hero decides to leave practical activities and move to Sverdlovsk to devote himself entirely to science. However, realizing that the source of his talent is practice, he returns to his home factory...