2239. Now a diplomat for the United Federation of Planets, Spock agrees to a bonding with Saavik, his former protégé and an accomplished Starfleet officer in her own right. More than a betrothal but less than a wedding, the sacred Vulcan rite is attended by both Spock's father, Sarek, and a nervous young Starfleet officer named Jean-Luc Picard. Plans for the consummation of the pair's union are thrown off course when Spock receives a top-secret communication that lures him into the heart of the Romulan empire. Enmeshed in the treacherous political intrigues of the Romulan capital, undone by a fire that grows ever hotter within his blood, Spock must use all his logic and experience to survive a crisis that will ultimately determine the fate of empires!

It is the twenty-third century. On the planet Vulcan, a crisis of unprecedented proportion has caused the convocation of the planet's ruling council -- and summoned the U.S.S. Enterprise™ from halfway across the galaxy, to bring Vulcan's most famous son home in its hour of need. As Commander Spock, his father Sarek, and Captain James T. Kirk struggle to preserve Vulcan's future, the planet's innermost secrets are laid before us, from its beginnings millions of years ago to its savage prehistory, from merciless tribal warfare to medieval court intrigue, from the exploration of space to the the development of o'thia -- the ruling ethic of logic. And Spock -- torn between his duty to Starfleet and the unbreakable ties that bind him to Vulcan -- must find a way to reconcile both his own inner conflict and the external dilemma his planet faces...lest the Federation itself be ripped asunder. Diane Duane, author of three previous bestselling STAR TREK novels and an episode of the new STAR TREK NEXT GENERATION® television series, as well as countless other bestselling science fiction and fantasy novels, has crafted a tale of unprecedented scope and imagination, at once a generations-spanning historical novel and a thrilling science fiction adventure.

Recounts the story of Mr. Spock's first mission aboard the Enterprise.

Kirk and McCoy accompany Spock to the Vulcan Academy Hospital, seeking treatment for an Enterprise crew member. Kirk soon finds himself involved in a homicide case.

The Romulans attack the planet Gateway, where Federation scientists are studying the Guardian of Forever -- the mysterious portal to the past. The Starship Enterprise™ must protect the Guardian -- or destroy it. But Spock has already used the portal to journey to the past. On the planet Sarpedion, 5,000 years ago, Spock knew a beautiful, primitive woman. Now he has gone back to meet his son!