2020 The U.S.S. Lewis & Clark, under the command of Colonel Shaun Christopher, sets off on humanity’s first manned mission to Saturn. But the unexpected presence of a stowaway complicates the mission — as does a startling encounter with an alien probe. But when Colonel Christopher attempts to capture the probe, he suddenly finds himself transported across time and space to a future era of space exploration… Stardate 7103.4 The U.S.S. Enterprise responds to an urgent distress call from a mining colony orbiting Klondike VI, a ringed gas giant not unlike Saturn. For unknown reasons, the planet’s rings are coming apart, threatening the safety of the colony and its inhabitants. Searching for a way to avert the disaster, Captain James T. Kirk and his crew investigate a mysterious alien probe that has just entered the system. But when the probe is beamed aboard, Kirk abruptly finds himself floating in space above Saturn, wearing an old-fashioned NASA spacesuit, with the Enterprise nowhere in sight… Two missions. Two crews. And a time-twisting crisis that spans the centuries…

Captain Kirk and the crew of the starship Enterprise find themselves in the middle of an undeclared war waged by the Klingon Empire... The Organians should be consulted about the war but their entire planet has disappeared – or been destroyed... Mr. Spock entered the transporter chamber. His image would be flashed to Organia by the huge machine's faster-than-light tachyons. But the experiment failed. Suddenly there were two Mr. Spocks. One of them had to be destroyed... BUT WHICH ONE?

The victim of a cruel experiment, Commander Spock renounces the U.S.S. Enterprise, becomes the Messiah of the planet Kyros, and launches a holy war on the rest of the world

Spock must play a dangerous game when an outside factor threatens the sovereignty of the Federation and the life of Captain James T. Kirk

Ten years have passed since Captain Kirk and the EnterpriseTM crew brought back hump-backed whales from the twentieth century to communicate with the mysterious Probe which threatened Earth. The Probe is returning to Earth and has plotted its course, and the Enterprise must continue to delve into the mystery of its language, and its cosmic purpose to save Earth once again