While Dr. Baltar is behind in the polls for the election and tries desperately to turn things around, Starbuck is planning a mission to rescue Anders from Caprica.

The group on Caprica is under fire by the Cylons, but suddenly they stop. With only one ship's votes to be counted, Roslin is way behind in the elections.

The Cylons have now been in control of New Caprica for over four months. Gaius Baltar is under their collective thumbs and essentially follows their orders. There is a resistance who set off bombs and do their best to disrupt Cylon activity. Col. Tigh is in prison and despite extensive torture, including the loss of an eye, has told them nothing. His wife Ellen will do anything to secure his release and is soon in a sexual relationship with one of the Cylons, John Cavil. There are mixed feelings among the survivors. Some feel the random acts of violence against their captors serves no useful purpose while others feel it is their duty to resist. Kara Thrace, Starbuck, is being kept prisoner in an apartment of sorts by Leoben Conoy. She too resists but every time she kills him, he is simply re-generated and reappears insisting he will continue to do so until he tells her she loves him. Back on Galactica, Admiral Adama takes his son Lee, Commander of the Battlestar Pegasus, to task for going soft.

As a result of the most recent suicide bombings, some of the Cylons are now arguing that they need to retaliate. Laura Roslin, among others, is in custody and Gaius Baltar tries to get her to cooperate. Tigh however absolutely refuses to stop the suicide bombings. Nighttime raids also leads to Cally's arrest but they leave her baby alone. Sharon Valerii sees what she can do about it. John Cavil meanwhile tells Ellen Tigh she is to provide the date and location of the next meeting of the resistance commanders. Leoben Conoy is still holding Starbuck prisoner but introduces her to her daughter, Kacey, produced from eggs they harvested from her when she was on the Farm. On Galactica, Admiral Adama begins to plan for a massive rescue of everyone on New Caprica. He realizes they will have to obtain the launch keys for all of the ships on the planet's surface. The best way of infiltrating the Cylons is with another Cylon so Adama commissions Sharon Agathon as an officer.

The secret source in the administration has provided Tyrol with a list of all humans scheduled for extermination. Tyrol's wife Cally is on the list and he sets off to rescue her. Sharon Agathon has made it safely to the planet but they are ambushed by Cylons lying in wait. They realize they were betrayed and Anders finds damning evidence that points to the identity of the traitor. D'Anna Biers has been having strange dreams of late and an oracle tells her that the child Hera is alive and she will hold her in her arms. Roslin meanwhile assigns a squad of men to protect the child at all costs. The Admiral sends the Pegasus away with the few remaining civilian ships to continue the search for Earth.

Baltar learns from Caprica Six of their ability to project themselves and imagine different surroundings which leads him to wonder if he too is a Cylon. He has told the Cylons what he knows about the location of Earth and they dispatch a Basestar to investigate. In the end, the survey ship is infected with a virus killing everyone aboard. Aboard the Galactica, Lt. Gaeta has been reviewing Baltar's work in deciphering the map they recovered on Kobol. He too thinks he knows what it all means. Of greater concern however is the wedge between those who stayed with the fleet and those who were on the ground fighting the Cylons. Starbuck and Colonel Tigh in particular are quite vocal in complaining about those who stayed behind and it's left to Admiral Adama to lay down the law.

The crew of Galactica makes a stop at the barren Algae planet.

The Cylons descend upon the re-supply mission as the Chief races to decipher the markings in the temple believed to hold The Eye of Jupiter, a sacred icon that is believed to contain a map to Earth.

Starbuck (Katee Sackhoff) and Laura Roslin (Mary McDonnell) face off with a gun between them, Lee Adama (Jamie Bamber) says goodbye to the Galactica, violent conflict breaks out between the seven models aboard Cylon Basestar, and Gaius Baltar (James Callis) is directly pulled into the "Final Five" situation.

The aftermath of a coup among the Cylons leads to further violence, Lee finds himself facing off against Roslin during his first meeting with the Quorum of Twelve as the new representative of Caprica, and Cally discovers the horrible truth about her husband Galen Tyrol. Meanwhile, Starbuck aimlessly searches for Earth with Anders and other Galactica officers.

The Hybrid keeps jumping the basestar, and Roslin has visions. The three, D'Anna, is un-boxed. Humans and Cylons engage in a battle to destroy the Resurrection Hub. Baltar is badly wounded and Roslin has to decide whether or not to help him.

Eighteen months ago: Saul poisons Ellen, who then finds herself downloaded into a new body aboard a Cylon Base Star, with a single Centaurion keeping watch over her. After the initial shock, she has a revelation as she remembers things she had forgotten. Present Day: Dr. Cottle is operating on Anders, who has a bullet lodged in his brain. Anders starts to remember things he had forgotten. Eighteen months ago: Cavil comes to see Ellen, who calls him John, because that's his "real" name. Cavil says he hates that name. John was the first Cylon model *Ellen* created. She also created seven others. So, there are actually only *eight* Cylon models and the "Final Five" are actually copies of humans who lived 2,000 years earlier and, together, created Resurrection, which allowed them and the Cylons to download. Number Seven, Daniel, was a favorite of Ellen. Jealous, John sabotaged the process of using Resurrection on Daniel, making him unique. John and Ellen start a months-long philosophical and ethical argument on Cylon - human interaction. John says he started the genocide of humankind because his "forebears on the Centaurion side of the family were the slaves of humanity." And he wants justice for that. Present Day: Anders tells Starbuck that he has seen "everything" and needs Kara to get "the others" - Galen, Tory, Saul and Ellen to his bedside. Anders says he remembers everything and knows why they have come all the way to Earth... Adama reinstates Tyrol as a Chief of Engineering. Tyrol starts inspecting the damage Galactica has taken during their journey. But he is not prepared for what he finds and Adama is not prepared for what Tyrol suggests as a repair method.

With Hera now likely in the hands of John Cavil, Admiral Adama sends out search teams to locate The Colony, the Cylon home world if you will, that Ellen Tigh says is the only place she imagines she could be. Adama reluctantly comes to the conclusion that the Galactica has reached the end of its days. He orders all repair activities halted and decides to strip the ship and share everything that is salvageable with the rest of the fleet. Starbuck meanwhile shares with Gaius Baltar what she found on the uninhabitable Earth. He subsequently - and quite publicly - proclaims her to be an angel.

The Colony is located sitting on the edge of a black hole with only one point of entry in what is a very large debris field. Knowing that the Galactica has reached the end of the line, Admiral Adama asks for volunteers to mount a raid on the Cylon base, realizing it may be the ship's last jump. In flashbacks prior to the Cylon invasion, key moments in the lives of several of the crew are presented. These include include the first time Kara Thrace and Lee Adama meet; Admiral Adama's struggle with his decision to retire from the colonial fleet; Gaius Baltar's relationship with his father and his developing relationship with Caprica Six; and Sam Anders discussing the motivation behind his professional sports career.

A stripped down Galactica attacks the Cylon's Colony ship in the hopes of rescuing Hera. The meaning of the shared dream in the Opera House on Kobol is revealed. Sam Anders is moved in his Hybrid tank to the CIC in the hopes that he will be able to assist the combatants. Their mission complete, Admiral Adama orders Starbuck to pick a destination - any destination - to which the ship can jump to get out of there. With that, the meaning of the tune and the musical notes are explained. Having successfully jumped, the old Galactica has truly reached the end of it's life. A planet capable of sustaining life is found and Lee Adama makes a radical proposal for the future of humankind. In a flash forward far into the future, Hera's importance to the human race is revealed.

As conflicts reach a climax, Cylons and humans face a stark choice.

Eighteen months ago: Saul poisons Ellen, who then finds herself downloaded into a new body aboard a Cylon Base Star, with a single Centaurion keeping watch over her. After the initial shock, she has a revelation as she remembers things she had forgotten. Present Day: Dr. Cottle is operating on Anders, who has a bullet lodged in his brain. Anders starts to remember things he had forgotten. Eighteen months ago: Cavil comes to see Ellen, who calls him John, because that's his "real" name. Cavil says he hates that name. John was the first Cylon model *Ellen* created. She also created seven others. So, there are actually only *eight* Cylon models and the "Final Five" are actually copies of humans who lived 2,000 years earlier and, together, created Resurrection, which allowed them and the Cylons to download. Number Seven, Daniel, was a favorite of Ellen. Jealous, John sabotaged the process of using Resurrection on Daniel, making him unique. John and Ellen start a months-long philosophical and ethical argument on Cylon - human interaction. John says he started the genocide of humankind because his "forebears on the Centaurion side of the family were the slaves of humanity." And he wants justice for that. Present Day: Anders tells Starbuck that he has seen "everything" and needs Kara to get "the others" - Galen, Tory, Saul and Ellen to his bedside. Anders says he remembers everything and knows why they have come all the way to Earth... Adama reinstates Tyrol as a Chief of Engineering. Tyrol starts inspecting the damage Galactica has taken during their journey. But he is not prepared for what he finds and Adama is not prepared for what Tyrol suggests as a repair method.

While Dr. Baltar is behind in the polls for the election and tries desperately to turn things around, Starbuck is planning a mission to rescue Anders from Caprica.

The group on Caprica is under fire by the Cylons, but suddenly they stop. With only one ship's votes to be counted, Roslin is way behind in the elections.

The Cylons have now been in control of New Caprica for over four months. Gaius Baltar is under their collective thumbs and essentially follows their orders. There is a resistance who set off bombs and do their best to disrupt Cylon activity. Col. Tigh is in prison and despite extensive torture, including the loss of an eye, has told them nothing. His wife Ellen will do anything to secure his release and is soon in a sexual relationship with one of the Cylons, John Cavil. There are mixed feelings among the survivors. Some feel the random acts of violence against their captors serves no useful purpose while others feel it is their duty to resist. Kara Thrace, Starbuck, is being kept prisoner in an apartment of sorts by Leoben Conoy. She too resists but every time she kills him, he is simply re-generated and reappears insisting he will continue to do so until he tells her she loves him. Back on Galactica, Admiral Adama takes his son Lee, Commander of the Battlestar Pegasus, to task for going soft.

As a result of the most recent suicide bombings, some of the Cylons are now arguing that they need to retaliate. Laura Roslin, among others, is in custody and Gaius Baltar tries to get her to cooperate. Tigh however absolutely refuses to stop the suicide bombings. Nighttime raids also leads to Cally's arrest but they leave her baby alone. Sharon Valerii sees what she can do about it. John Cavil meanwhile tells Ellen Tigh she is to provide the date and location of the next meeting of the resistance commanders. Leoben Conoy is still holding Starbuck prisoner but introduces her to her daughter, Kacey, produced from eggs they harvested from her when she was on the Farm. On Galactica, Admiral Adama begins to plan for a massive rescue of everyone on New Caprica. He realizes they will have to obtain the launch keys for all of the ships on the planet's surface. The best way of infiltrating the Cylons is with another Cylon so Adama commissions Sharon Agathon as an officer.

The crew of Galactica makes a stop at the barren Algae planet.

Starbuck (Katee Sackhoff) and Laura Roslin (Mary McDonnell) face off with a gun between them, Lee Adama (Jamie Bamber) says goodbye to the Galactica, violent conflict breaks out between the seven models aboard Cylon Basestar, and Gaius Baltar (James Callis) is directly pulled into the "Final Five" situation.