A psychological drama of a high-profile family in the 1920s. András Erdély, the son of an influential MP, is placed in a psychiatric sanatorium to escape punishment for the murder of his wife. Through his memories and intimate confessions, the viewer gets to know the atmosphere of the house ruled by his despotic father, the son's journey from "better society" to a social career and uncovers the secret of his sexual deviations, everything that led András, a mentally disturbed man, to crime. The story of love, morbid passion and hatred is also a questioning of the roots of evil in man, of responsibility for one's own actions and of the limits of tolerance and medical ethics.

Two families live in an old house in a small town. Downstairs with his parents, a poor boy and upstairs, the owner's little girl, who sings very well and aspires to become a great singer. The boy adores his little friend and is very proud of her pretty voice. One day the children go to a fair together. The boy buys his friend a gingerbread heart with his hardly saved pennies and gives it to her out of great love. But he cannot yet tell her how much he loves her. He whispers his feelings only to the old willow tree, which is the only one who knows his secret. The years pass and the children become adults…