When his mother eloped with an Italian opera singer, Louis Mazzini was cut off from her aristocratic family. After the family refuses to let her be buried in the family mausoleum, Louis avenges his mother's death by attempting to murder every family member who stands between himself and the family fortune. But when he finds himself torn between his longtime love and the widow of one of his victims, his plans go awry.

A man of humble beginnings and honest intentions rises to power by nefarious means. Along for the wild ride are an earnest reporter, a heretofore classy society girl, and a too-clever-for-her-own-good political flack.

Norwegian immigrant Marta Hanson keeps a firm but loving hand on her household of four children, a devoted husband and a highly-educated lodger who reads great literature to the family every evening. Through financial crises, illnesses and the small triumphs of everyday life, Marta maintains her optimism and sense of humor, traits she passes on to her aspiring-author daughter, Katrin.

Unemployed Antonio is elated when he finally finds work hanging posters around war-torn Rome. However on his first day, his bicycle—essential to his work—gets stolen. His job is doomed unless he can find the thief. With the help of his son, Antonio combs the city, becoming desperate for justice.