When Apollo and Starbuck find a primitive sleeper ship carrying a man, a woman, and four children, speculation spreads in the fleet that the people are from Earth.
When the 12 Colonies of Man are wiped out by a cybernetic race called the Cylons, Commander Adama and the crew of the battlestar Galactica lead a ragtag fleet of human survivors in search of a "mythical planet" called Earth.