The Garden of Rama is a science fiction novel by Arthur C. Clarke and Gentry Lee about the colonization of a gigantic spacecraft called Rama III. Three surviving astronauts from Rama II and their children are sent back to the solar system to gather colonists. Convicts are promised freedom if they are sent to Rama. However, once there, an evil boss takes control of the ship and begins a genocide. The astronauts and an unknown species send for help, leaving the end unresolved.
The book picks up the story nine months after the end of Rama II . The book follows the story of three astronauts from the expedition in Rama II who were trapped aboard the cylindrical alien spacecraft, Rama II, heading out towards deep space. Along the journey, five children were born. Simone Tiasso Wakefield, Catharine Colin Wakefield, Eleanor Joan Wakefield, Benjamin Ryan O'Toole and Patrick Erin O'Toole, were born by Nicole des Jardins from her relationships with Richard Wakefield and Michael O'Toole. These children later become major characters in Rama Revealed . After a twelve-year journey, they arrive in the vicinity of the star Sirius, where all eight rendezvous with a Raman Node.
At the Node they are subjected to physiological tests for a year while Rama is refurbished, and they are eventually sent back to the solar system, this time to collect two thousand more representatives of humanity. An Earth agency, known as the ISA, receives the message from Rama requesting two thousand humans. Upon its reception, the message is kept secret and, under the guise of a new Martian colony, the ISA starts acquiring its payload. The ISA selects a handful of their own representatives; meanwhile, they selectively gather convicts and promise them freedom if they are chosen to be a colonist. The payload is subdivided into three ships the Nina, Pinta, and Santa Maria (names based on Christopher Columbus' ships Niña, Pinta, and Santa María) that arrive sequentially at Rama. At this point the colonists believe everything is a hoax (despite the colossal size of Rama) created by the ISA. With that discontent as the tone upon their arrival, Rama III heads back to deep space with its new payload.
Soon an aggressive group of humans, led by a mob boss, seizes control of the human colony and begins a war of annihilation and propaganda against one of the other races occupying the massive spacecraft. The original astronauts and their children find themselves powerless to prevent the genocide. However, the aggressive behavior of the human species does not go unnoticed: Another species, unknown to the humans, observe their behavior and start considering a possible counterattack.
Meanwhile, Rama III determines that total escalation of the conflict is imminent and transmits an emergency signal to its ancient constructors... The book ends with a cliffhanger, on the eve of the execution of one of the original astronauts.