When Baltar and the Number Six who lives in his head have a falling out, she abandons him, only to surface a short while later aboard the Galactica. But now she's called Shelley Godfrey, everyone can see her, and she's telling them that she has evidence, passed on by the late Dr. Amarak, that will prove Baltar sold out the human race to the Cylons.
In a distant part of the universe, a civilization of humans live on planets known as the Twelve Colonies. In the past, the Colonies have been at war with a cybernetic race known as the Cylons.
40 years after the first war the Cylons launch a devastating attack on the Colonies. The only military ship that survived the attack takes up the task of leading a small fugitive fleet of survivors into space in search of a fabled refuge known as Earth.
Battlestar Galactica - Six Degrees of Separation Synopsis and Schedule