The voyages of the Star-Ship Enterprise across man's final frontier-space! Its mission: to explore strange new worlds, to seek out new life and civilisations, to boldly go where no man has gone before.

When an unknown planet looms into the path of the USS Enterprise it is hardly the time for the helmsman to disappear, and for his successor at the controls to follow suit is somewhat more than inconvenient, especially as he happens to be the Captain!
The urbane anachronistic figure which has uncannily contrived their discomfiture leads Kirk and his crew a merry dance until events take an uglier turn, culminating in a bizarre conclusion.