On his first day aboard the USS Enterprise, Ensign Spock and his new superior officer Number One get trapped in a turbolift.

Newly minted Captain Lynne Lucero is excited to take command of the U.S.S. Cabot. That is, until she meets Edward Larkin, an ornery scientist who believes he has found a revolutionary new use for tribbles.

When an attack on Starbase 28 leaves a surprise prisoner under Cadet Thira Sidhu's watch, she is faced with making a decision that may threaten her standing in Starfleet.