Past and future merge as the captains of the U.S.S. Enterprise NCC-1701 and NCC-1701-D, Kirk and Picard, embark on separate resuce missions and end up with the fate of each other's starships on their hands.
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 routine diplomatic visit to the water-world of Akkalla becomes a nightmarish search for a missing Spock and Chekov. The search plunges Admiral Kirk into a corrupt government's desperate struggle to retain power.