When Demora sulu and exemplary Young Star Fleet officer it's only attacks her command in officer, who kills her in self-defense, everyone is stunned. No one has more grief-stricken than her father, Captain sulu of the USS excelsior. Determine to learn the truth behind his daughter's bizarre death, Sulu goes to the planet where she was killed, and finds himself confronted by an old enemy eager to destroy sulu's reputation in his life