At Deep Space Nine, a space station located next to a wormhole in the vicinity of the liberated planet of Bajor, Commander Sisko and crew welcome alien visitors, root out evildoers and solve all types of unexpected problems that come their way.

A rich man's mistress gets in the middle of a high-society murder in Beverly Hills.

Theorizing that one could time travel within his own lifetime, Dr. Sam Beckett stepped into the Quantum Leap accelerator and vanished... He woke to find himself trapped in the past, facing mirror images that were not his own and driven by an unknown force to change history for the better. His only guide on this journey is Al, an observer from his own time, who appears in the form of a hologram that only Sam can see and hear. And so Dr. Beckett finds himself leaping from life to life, striving to put right what once went wrong and hoping each time that his next leap will be the leap home.

Once again, Earth is the battleground. But now the aliens whose human guise hides their true reptilian natures are wiser. They believe the secret to their survival on Earth lies in the DNA of the newly born half-human, half-spaceling Starchild. But that's something the world's Resistance Fighters cannot allow.