Apollo and Starbuck discover a void in space. Commander Adama is convinced that this void will lead them to the planet Kobol, and orders they go through.

While Commander Adama leads the rag-tag fleet of ships to the planet Kobol, where he hopes to find clues of Earth's location, the Viper pilots contract a disease, making it necessary for the women to take on fighter patrol duties. But the traitor Baltar leads the Cylons in an attack on the Galactica.

Starbuck is assigned to test a new ultra-fast, but unarmed, Viper with a talking computer named CORA; but when he meets a bootlegger, who steals the Viper, Starbuck finds himself arrested by the Galactic Police of a prison planet.

Baltar attempts to lure Galactica into range of a gigantic pulsar cannon. Adama becomes aware of the trap and sends in a team of commandos to destroy it.

Apollo and Starbuck lead a group of convicts on a possible suicide mission to destroy the cannon, which is located on an icy planet.

When a Cylon attack destroys most of the fleet's food supply, the Galactica must trade equipment for grain on a rural planet plagued by the Borays, a group of pig-like marauders.

A Cylon kamikaze attack leaves the Galactica burning in space, with no way to extinguish the blaze that has trapped Boomer, Athena, and Boxey except a dangerous spacewalk by Apollo and Starbuck.

Apollo and Starbuck follow the escaped Eastern Alliance ship back to Terra, where they help the Terrans overcome a nuclear holocaust, with the help of the race of white lights that had earlier helped them defeat Count Iblis.

Rather than continue fleeing from their enemies, the crew of the Galactica commences an all-out attack on a Cylon base.