Five years after the presumed death of Captain James T. Kirk, the U.S.S. Excelsior, commanded by Captain Hikaru Sulu, is at the forefront of exploration, diplomacy, and the defense of the Federation. Unprecedented peace talks with the violently xenophobic Tholian Assembly trigger a deadly confrontation aboard the Excelsior. Now Sulu and his crew - including Chekov, Rand, Chapel, Tuvok, and Akaar - are thrust into an unexpected conflict between the Tholians and a mysterious new enemy, the Neye