While Spock escorts his young niece, Teska, back to Vulcan for her betrothal ceremony, he strives to help her understand both her Vulcan heritage and her growing telepathic abilities. But when an unplanned mind meld reveals the true identity of a deadly assassin to Teska, she and Spock find themselves the target of a Regelian criminal network. With the Enterprise light-years away, Spock and his niece must go on the run, pursued by a conspiracy determined to end Teska's future - and threaten the reunification process - before it has even begun.
