Little Matti, who has been living in the countryside with his grandmother, leaves for Helsinki to search for his missing mother, Kerttu. In the city, he is helped by Taneli, a homeless alcoholic artist, and Salme, a girl who lives with her alcoholic aunt.
The self-assured manager Julius Särkelä maintains strict discipline in his office and at home, which is experienced by his daughter Saara and her suitor Martti, as well as the landlord Heroja, who is chasing his debts, and even the cat belonging to the patron Fallsten. Dr. Kosonen softens the stern leader by giving a speech at a party, which ultimately revolutionizes Särkelä's worldview.
