The story is about a youth named Massimo Monaldi, who, living in Rome, is a part-time college student who has some involvement in the protests that occur at his university. Massimo is also involved with drugs and he sometimes steals to make a living and support his habit (the theft of a tobacco box is very important to the story). Among his associates are his girlfriend, Cinzia, who comes from a wealthy family, and he has a wealthy male friend named Rudy who is very naive as well as strangely pampered by his overly-doting mother. Both families don't approve of their relationship with Massimo.
When Madame Adelaide Bonfamille leaves her fortune to Duchess and her children -- Bonfamille's prize family of domesticated house cats -- the butler plots to steal the money and kidnaps the heirs, leaving them out on a country road.
A petty thief posing as an actor is brought to Los Angeles for an unlikely audition and finds himself in the middle of a murder investigation along with his high school dream girl and a detective who's been training him for his upcoming role.
A military explorer meets and befriends a Goldi man in Russia’s unmapped forests. A deep and abiding bond evolves between the two men, one civilized in the usual sense, the other at home in the glacial Siberian woods.
During World War I, a German U-boat sinks a British ship and takes the survivors on board. After it takes a wrong turn, the submarine takes them to the unknown land of Caprona, where they find dinosaurs and neanderthals.