Season 1 picks up where the miniseries left off. After engaging in a losing battle against the Cylons, humanity's last remnants are forced to flee under the protection of their one remaining warship, the outdated Battlestar Galactica. Pursued by the Cylons-some of whom have now taken human form-Commander Adama and President Roslin lead these last remnants of humanity in search of a new home - a planet called Earth.

A two-hour Battlestar Galactica special that tells the story of the Battlestar Pegasus several months prior to it finding the Galactica.

As season 4 begins, the last remnants of humanity continue their search for a new home. Galactica’s crew attempts to make sense of the inexplicable while four members of the fleet are still reeling from past revelations.