The Cylons attack the battlestar Galactica and the rag-tag fleet exactly every thirty-three minutes, leading many to believe that there is a traitor in their midst.
Boomer wakes up in a storage locker soaking wet and carrying a bag with a bomb in it. Moments later, several explosions rip through the Galactica, bleeding her of 60% of her water. Now the crew struggles to find another source of water before riots threaten to destroy the convoy.
Lee has an idea to use prisoners to collect a new supply of water from underground on an icy moon, but the leader of a group of insurgents uses the opportunity to take some of the ship's officers hostage.
The ship is struck by a serious accident and losses 20 of their best fighter pilots, the incident brings back bad memories to haunt some of the crew members and the pressure is on to retrain a new team before the ship comes under attack.
Commander Adama is thrown into moral conflict when one of his crew goes missing on a reconnaissance mission. He must decide whether to give up the search mission or forge on using precious man power and resources.
There is a spy on board Battlestar Galactica. The spy is a humanoid Cylon and could prove to be the ultimate weapon for their enemies. Can the crew detect the agent before anymore are unsuspectingly released onto the fleet.
The ship's crew get caught up in an intense battle of who done it, while The Chief and company attempt to unravel the secrets of their enemies technology. Meanwhile two crew members are sent into flight from brutal pursuers.
Commander Adama is surprised to be confronted by a clone of a Cylon he previously killed. The crew believe the clone has a devious plan and interrogate him determined to uncover what he is up to.
Suspicions run high on Battlestar Galactica as Commander Adama goes mysteriously missing in action during an operation and turns up with Captain Tigh's wife. The Captain couldn't be happier but the crew wonder about her intentions.