Massive computer malfunctions are plaguing the *Enterprise* when Kirk suddenly receives a shocking message from Star Fleet Command: *Centaurus has been bombed and annihilated; thousands are dead. Give whatever help you can.* Centaurus is a beautiful, peaceful planet, home to many humans — including McCoy’s daughter Joanna. The crew risks beaming down to investigate. But Kirk is thrown into a deadly struggle between violent enemy terrorists and vengeful Centaurians. Now Lt. Uhura, left alone in command, must jeopardize the cripple *Enterprise* to save Centaurus, Kirk — and Joanna McCoy!