These are the Voyages of the Starship Excalibur, carrying on the glorious Star Trek tradition with an exciting new cast of characters: MacKenzie Calhoun, the scarred, alien captain, personally recommended by Captain Jean-Luc Picard; Commander Shelby, the ambitious first officer - and Calhoun's former lover; Dr. Selar, the Vulcan physician formerly assigned to the Enterprise; Ops officer Robin Lefler; and the rest of the crew of the Excalibur, boldly going where no Star Trek series has gone before.
On the Thallonian homeworld, former capital of the fallen empire, the sole survivor of the ruling family has been placed on trial for his life - and the verdict may decide the future of an entire sector. But the crew of the Excalibur has even more to worry about when their sensors detect ominous vibrations from beneath the planet's surface . . .