The story of the Medici family of Florence, their ascent from simple merchants to power brokers sparking an economic and cultural revolution. Along the way, they also accrue a long list of powerful enemies.

Nevada Smith is the young son of an Indian mother and white father. When his father is killed by three men over gold, Nevada sets out to find them and kill them. The boy is taken in by a gun merchant. The gun merchant shows him how to shoot and to shoot on time and correct.

When an undersea volcano sends tremors throughout the Atlantic, aquatic creatures come out of hiding. Merchant seamen Joe Ryan and partner Sam Slade harness the most unusual of the lot, a massive beast that looks like a Tyrannosaurus Rex. The enterprising sailors deliver their quarry to a British circus, but it turns out that the animal is a newborn. And, when his much larger mother arrives in London to rescue her son, the city feels her wrath.