MacKenzie Calhoun, captain of the U.S.S. Excalibur, finds himself reporting to Elizabeth Shelby, Commodore of the first Federation space station in sector 221-G, while Burgoyne and Selar confront their son's deadly genetic illneess, and Si Cwan and his wife face new challenges as the newly elected president and first lady of the Thallonian Republic. 25,000 first printing.