A black briefcase accompanies a child in his life from the very moment of his birth. He devotes all his attention to the case. Nothing can distract him: not a girl on a swing, not a funny clown. The hero resists various temptations - sports, women, restaurants, fishing, travel. Because of his passion for the briefcase, he remains indifferent to those in need of help. When he gets old, he opens the briefcase and realizes that it is his coffin.