Haviland Tuf, owner of a seedship, a unique and powerful ship that can control the genetic material of thousands of creatures, travels to across space to tackle the problems that human settlers have created.
Mr. Spock must race to solve the mysteries of an ancient civilization that once inhabited the planet Careta IV after Captain Kirk and his landing party become trapped in a strange alien environment.
Ziggy and the other members of the Black Dinosaurs go to Space Camp where they learn about the space program and speculate about the existence of extraterrestrial beings.
The reader is taken aboard a space cruiser to research two different planets and can choose between alternative adventures, each leading to forty-two possible endings.