BSG, Season 3

Picking up where last season's cliffhanger left off, Laura Roslin (Mary McDonnell), thwarted in her efforts to steal the election from a man she suspects is somehow in collusion with the Cylons, loses her presidency to Giaus Baltar (James Callis), who promised safe refuge from the Cylons by settling on the recently discovered planet New Caprica. However, after a year of enduring harsh conditions and suffering under Baltar's self-indulgent government, the fleet's worst fears are realized when the Cylons discover their hiding place. With the battlestars Galactica and Pegasus helpless in the face of the arrival of a full Cylon fleet, the colonists are left to fend for themselves as Adama (Edward James Olmos) and Apollo (Jamie Bamber) are forced to jump away with the remaining fleet in order to save themselves — but vow to return. The Cylons offer President Baltar one dubious chance for survival: surrender and co-exist peacefully under Cylon rule or be annihilated.