Battlestar Galactica Season One

Battlestar Galactica (2003 Miniseries) - Part 1.0
Over forty years have passed since the end of the Cylon War, contested between the humans of the Twelve Colonies and man's creation, the Cylons.
The Galactica, one of the original twelve battlestars, is scheduled to be decommissioned. As part of the ceremonies, Commander Adama's son Lee ("Apollo") is named to fly Adama's restored Viper. Lee's return opens old wounds when they discuss the fate of Adama's other son, Zak.
Meanwhile, in Caprica City, the famous scientist Gaius Baltar argues against limits on research into artificial intelligence. He also has a sensual new lover with a mysterious agenda of her own.
Battlestar Galactica (2003 Miniseries) - Part 1.5
Forty years after the end of the Cylon War, the artificially-created Cylons declare war on humanity by attacking and destroying the twelve colonies. The military crumbles after their newly updated ships shut down in the face of a new unknown Cylon weapon. A lone Battlestar known as Galactica, due to be decommissioned and converted into a museum, turns out to be the only thing standing between the Cylons and the total destruction of the human race.
Battlestar Galactica (2003 Miniseries) - Part 2.0
With all others in the line of succession dead, Laura Roslin, the Education Minister, is appointed president of the Thirteen Colonies. Her new plan is to round up all of the surviving ships and together with the Galactica flee their home systems, never to return.
Battlestar Galactica (2003 Miniseries) - Part 2.5
Forty years after the end of the Cylon War, the artificially-created Cylons declare war on humanity by attacking and destroying the twelve colonies. The military crumbles after their newly updated ships shut down in the face of a new unknown Cylon weapon. A lone battlestar known as Galactica, due to be decommissioned and converted into a museum, turns out to be the only thing standing between the Cylons and the total destruction of the human race.

33
Following the destruction of the Colonies, the refugee fleet led by Galactica has been relentlessly chased by the Cylons who pop up every 33 minutes to attack again, and have been doing so for five days straight. 33 minutes gives them barely long enough to calculate a jump and distribute the coordinates to each ship. The perpetual attacks and jumps to escape prevent anyone from sleeping for very long, even if they aren't involved in keeping the fleet moving. The equipment is also stressed to the point that, finally, a passenger ship called the 'Olympic Carrier' is left behind, rebooting their jump computer when the jump is executed. When the Olympic Carrier suddenly jumps in to rejoin the fleet some time later, it seems certain that the ship must have been infiltrated. The convoy of refugees, led by the recommissioned Battlestar Galactica, is attacked exactly thirty three minutes after every FTL jump, leading many to believe there is a traitor in their midst.
Water
President Roslin arrives on Galactica as Boomer's Cylon side asserts itself, forcing her to sabotage Galactica's water supply against her will. A series of explosions leads to the loss of 60% of the water reserves and Commander Adama is compelled to introduce rationing and begin a search of nearby planetary systems for any H20 deposits. 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 Battlestar 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.
Bastille Day
Deciding to use the thousand prisoners on a prison transport ship to mine the ice on the planet they've found, Galactica's plans are upset when a political prisoner onboard leads an uprising, taking hostages. He questions the legitimacy of Roslin's government and demands free elections to be held in the fleet. 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.

Act of Contrition
There's a party on Galactica's flight deck as Flat-Top just had his thousandth landing. Something goes terribly wrong however when a drone accidentally goes off and explodes in a group of pilots. 13 are dead. During the ceremony Kara Thrace starts thinking about her dead fiancée Zak Adama. And those memories even get clearer when Adama orders her to start training new pilots. She seems very uncomfortable in doing so. The favor she did for Zak by letting him pass basic flight seems to bother her more and more. Angrily she stops training pilots after just one day. Meanwhile on Cylon-occupied Caprica Helo and Cylon-Sharon find a bomb shelter in a restaurant. It seems like a good place to stay for a while. There's food, water and anti-radiation medication in abundance. When an accident kills or incapacitates 20 of Galactica's fighter pilots, Kara must train a new squad. The process brings back painful memories for her and Lee. Meanwhile, Roslin seeks a cure for her breast cancer.
You Can't Go Home Again
Starbuck has been shot down over a barren moon, and must be rescued before she runs out of oxygen. Adama become obsessed with trying to save her even when all hope seems lost, putting the Fleet at risk. Meanwhile, Starbuck finds the Cylon Raider she shot down, and tries to learn how to fly it so she can escape. When Kara goes missing under enemy fire, Lee and his father stir up resentment by using too many of the Galactica's scanty resources in their attempts to find her.
Litmus
A humanoid Cylon straps himself with explosives and commits a suicide bombing in a crowded hallway on Galactica. Roslin and Adama are forced to publicly reveal that the Cylons now have models that look like humans, and a wave of paranoia spreads over the fleet as everyone starts being suspected of being a Cylon. After a suicide attack by a humanoid Cylon, the general populace of the fleet learn of the existence of these Cylons. A tribunal is convened to determine if any more of them are hiding among the crew of the Galactica.
Six Degrees of Separation
After Baltar has an argument with the vision of Number Six he sees in his head, a physical copy of Cylon model Number Six shows up in Galactica's CIC claiming to be a woman named Shelley Godfrey who has evidence that proves that Baltar has betrayed humanity...except that she's trying to frame him for an act of pre-attack sabotage. A woman accuses Dr. Baltar of being the one who let the Cylons access the defense mainframe. As proof, she presents a disc that contains photographs of a man looking like Dr. Baltar entering the mainframe the day before the attack. As the contents of the disc are being analyzed, Dr. Baltar must wage a lonely battle to prove his innocence, while also dealing with the sudden disappearance of Number Six from his life.

Flesh and Bone
A humanoid Cylon is captured in the fleet, a copy of the Leoben model, who claims that he has planted a nuclear bomb in the Fleet before he was captured. Starbuck is tasked with interrogating him, which soon becomes a battle of wills as Starbuck has her marines to torture the Cylon to try to break him. A copy of the Leoben Conoy model (the Cylon that Adama killed in the mini-series) appears in the civilian fleet. Starbuck is assigned to the interrogation. Roslin had a dream about Conoy before he was captured, so she's particularly determined to uncover his plans. Meanwhile, Boomer asks Baltar to test his new Cylon detector on her. Sharon on Caprica receives new instructions that she's not comfortable with.
Tigh Me Up, Tigh Me Down
After the interrogated Cylon gave Roslin the idea that Adama might be a Cylon, Roslin becomes suspicious of him. Unexpectedly, Colonel Tigh's estranged wife Ellen turns up alive in the fleet, apparently miraculously, raising the possibility that she might be a Cylon. Roslin's suspicions regarding Commander Adama increase when he can't be located during a military operation. Col. Tigh defends his friend despite being mad that he also didn't know where Adama was. But everything is explained when the commander returns to Galactica with Ellen Tigh. It seems that the colonel's estranged wife had been unconscious since the Cylon attack and is now awake and ready to reconcile. Tigh is thrilled to have his wife alive and back in his life; everyone else now turns their suspicions towards her.
The Hand of God
The fleet is running out of tylium fuel and will soon not have enough to keep running from the Cylons, when they find an asteroid with several years worth of tylium ore...unfortunately, the Cylons have already built a mining base on it. The fleet is facing a fuel shortage; the only possible relief comes from an active and heavily armed Cylon fuel refinery. Adama decides to launch an offensive against the base. This puts Lee on the spot since not everyone believes that he's up to the challenge of leading the assault. Baltar, the resident "Cylon expert," makes a guess that could put the entire mission in jeopardy if he's wrong.

Colonial Day
President Roslin has rebuilt a new Quorum of Twelve, the legislative branch of the government, but terrorist leader/political dissident Tom Zarek is elected as a member, and immediately motions that the Quorum vote to appoint a new Vice President, and runs for the office. Tom Zarek has himself nominated for the role of Vice President as an assassin is located on board the Cloud Nine Luxury liner. As tensions flare the cruel hand of politics leads to murder, and the election of the most unlikely Vice President.
Kobol's Last Gleaming: Part 1
Galactica stumbles upon Kobol, the long-lost home world of humanity that the 13 Tribes came from, which legend says holds the only clues to the location of Earth. Roslin convinces Starbuck to steal the captured Cylon raider and return to Cylon-occupied Caprica with it to retrieve a religious artifact that will unlock the secrets on Kobol. In a moment of bad judgment, Kara sleeps with Gaius Baltar. Boomer and Crashdown discover a planet that Roslin believes is Kobol, the ancient homeworld of humanity. Boomer continues to struggle with her Cylon instincts, leading her to thoughts of suicide. Adama believes that the fleet could settle permanently on the new planet. However, the Raptor scouting party discovers a Cylon fleet near the planet. On Cylon-occupied Caprica, Helo encounters Caprica Sharon for the first time since he learned that she is a Cylon.
Kobol's Last Gleaming: Part 2
Infuriated that Roslin usurped his command by ordering Starbuck to steal the captured Raider, Adama decides that his only option is to storm Colonial One with marines and terminate her presidency. Starbuck reaches Caprica and finds the Arrow of Apollo in a museum, but she has to go through a copy of Number Six to get it. The crew of Raptor One crashes on Kobol. Baltar and Number Six look upon the face of the future. Starbuck reaches Caprica and finds the Arrow of Apollo. Adama orders the arrest of the President over her ordering Starbuck to retrieve the Arrow, and Boomer goes on one final mission to destroy the Base Star orbiting Kobol. Old Alliances fall, and new ones are formed, and someone is shot by a Cylon agent...