Captain Kirk is suspected of stealing top-secret Federation technology. With the aid of Mr. Spock, Lt. Cmdr. Piper begins a desperate search for the very real and very dangerous traitor.
A crisis on the planet brings the U.S.S. Enterprise and Mr. Spock to Vulcan in its time of need. The entire history of Vulcan and its innermost secrets are laid bare in the struggle to save the Federation and Vulcan.
When Captain Kirk leaves Dr. McCoy in command, everything that can go wrong does--Captain Kirk disappears, the Klingons arrive ready to fight, and then a deadly power threatens the ship.
