Fallout 3 plot

The Player Character is a young inhabitant of Vault 101. The Vault has supposedly been sealed for the last 200 years, with nobody entering or leaving. All was going well until your father disappeared from the vault without any explanation. The Vault Overseer believes that you knew about the escape and sends his people to subdue you. You are left with no choice but to leave the Vault and set off on a journey to locate your father and find the reason for his disappearance.

Rust, decay, and creeping vegetation infest monuments from before the Great War. Amidst the ruins of Downtown DC, The Capitol, The Jefferson Memorial and the battered remains of The Washington Monument still stand in the desolate area that is now known as The Capital Wasteland. The central hub of civilization in the ruins of the former capital is Rivet City, based in the remains of an aircraft carried far inland and beached by a catastrophic tsunami whose waters have long since receded. Other settlements include the towns of Megaton, Arefu, Tenpenny Towers and Paradise Falls. Movement through the downtown area and settlements is possible through the Washington Metro tunnels and crossing the desolate nuclear wasteland.

The Brotherhood of Steel community is stationed in the Citadel built in the ruins of the pre-War Pentagon where they attempt to preserve as much pre-war technology as possible. The mysterious Mister Burke and his employer, Allistair Tenpenny send the player on a mission of sabotage and destruction in the town of Megaton. But it is Super mutants, who since emerging from their refuges, have waged an unceasing war against humans to invade their territory and take live captives, and the Enclave - the self-styled inheritors of the power of the United States government - under the leadership of their new President John Henry Eden, are the player's biggest foes in the game.

As you search for your father, either through Three Dog, DJ of Galaxy News Radio, or by speaking directly to Madison Li in Rivet City, you learn that he went to the now abandoned Project Purity located in The Jefferson Memorial. His aim was to complete Project Purity which was intended to purify huge amounts of water for the entire wasteland. However, when you reach the Jefferson Memorial you find a holotape detailing his search for the brilliant scientist Doctor Stanislaus Braun who worked for Vault-Tec before The Great War, and now resides in Vault 112. Doctor Braun invented the Garden of Eden Creation Kit (G.E.C.K.), a device meant to terraform the world after a nuclear holocaust.

Upon finding and entering Vault 112, you find the inhabitants have all gone into virtual reality simulators and are trapped in Tranquility Lane. When the the simulation loads you talk to Betty, who asks you to cruelly make another child cry. Upon doing so she begins to speak with a startlingly male voice allowing you to ask a single question which she says she will answer to the best of her ability. She then asks you to ruin the marriage of the Rockwells. Alternatively, you can enter an abandoned house and by activating a set pattern of items in a melodic tune activate a fail-safe computer terminal. On the computer are the records of how Stanislaus Braun has been playing cruel games with the residents of the Vault, sadistically torturing them and then changing the simulation when it got "boring". Also on the computer is a fail-safe program that would initiates a simulation of a Chinese invasion (borrowed from the government at his request) which will physically kill the residents of the vault because the "safety protocol" is off. However, Braun cannot deactivate his own safety and therefore cannot commit suicide, leaving him alone with no one else to torture. If you do this he reveals your father has been inside the simulation as the dog next to him. You are then free to leave by a door that materializes next to him. After exiting the simulation, your father then emerges out of a stasis pod and tells you that he went to Braun because he wanted to confirm that the G.E.C.K could be used for Project Purity.

Once your father is free, he asks you to help him reinitialize Project Purity. He travels to Rivet City to find scientists that formerly worked on the project with him and convinces them to resume work on the project. Once he does, you go to Project Purity's headquarters and help make several repairs, after which you are attacked by the Enclave. Upon your return to the control room you find your father locked inside the control booth talking to Enclave Colonel Augustus Autumn who states that the Enclave is taking over Project Purity. Your father then floods the control booth with radiation, sacrificing himself to aid in your escape and kill the Colonel Augustus Autumn. You must then proceed through the Taft Tunnel to the Citadel with the remaining scientists. Upon leaving the tunnels and entering the safety of the Citadel you are introduced to Elder Lyons, leader of the Capitol Wasteland's detachment of the Brotherhood of Steel, who grants you access to the Citadel. He also gives you permission to learn how to operate Power Armor and trade with the Brotherhood. After looking through the Brotherhood's archives you learn that Vault 87 was the only vault in the D.C. area that was issued a G.E.C.K.

You must then go through Little Lamplight since direct entrance to Vault 87 is impossible, due to it having been hit directly by a nuclear warhead. You can convince Mayor Macready to let you into Little Lamplight by using the Child at Heart perk or by freeing children captured by slavers in Paradise Falls.

Inside Vault 87 is Fawkes, a super-mutant that had access to the vault computers and their vast data banks, resulting in him being much more intelligent than the average super mutant. He was trapped in the room by the other super mutants who viewed him as a freak, and prefers to be called a meta-human. Upon questioning him, he offers to take you to, and retrieve the G.E.C.K. from the irradiated section of the vault if you free him from his holding cell. If you choose not to free him, there is a room with a radiation suit and rad-away which can be used to reach the G.E.C.K. After having Fawkes retrieve the G.E.C.K or doing it yourself, you start to head back to Little Lamplight, but are ambushed by and captured by Enclave soldiers.

When you come to you find yourself in Raven Rock, a Enclave stronghold in the extreme northwest of the map, there Colonel Autumn questions you and asks you for the activation code to Project Purity. However, President John Henry Eden orders Autumn to come and talk to him. When the Colonel leaves, the President request an audience with you and deactivates your restraining field. The President orders the Enclave soldiers not to harm you, an order then promptly recalled by Colonel Autumn. You are then forced to fight your way through Raven Rock to Eden's office. You find that he is an advanced model of the ZAX Supercomputer and is actually an amalgam of all of America's former Presidents. He tells you that the only way to get humanity to function properly in the wasteland is through water. He also says that The Wasteland must be cleansed, which is why he dos not allow you to leave until you have taken a vial of modified Forced Evolutionary Virus, which would kill all super mutants and Ghouls. You can then choose to destroy President Eden either through a speech check, Intelligence check, or find his self-destruct code and tell it to him. If you ask why Colonel Autumn cannot carry the F.E.V vial for him, Eden tells you that the Colonel does not agree with his plans. You may then leave Raven Rock. Afterwards, you find Fawkes outside, who came a little late to rescue you. You must then head back to Elder Lyons in the Citadel.

You meet Elder Lyons down in the Citadel's lab. When you arrive, a heated discussion between Scribe Rothchild, Elder Lyons, and Sarah Lyons is taking place. Rothchild argues that Liberty Prime is not ready for action, while Sarah is arguing that there isn't any time for another plan. Eventually, it ends with Lyons giving up and allowing Sarah, and Lyon's Pride, to go to the Jefferson Memorial with Liberty Prime. Once you arrive at Project Purity, you confront Colonel Autumn one last time, and decide his fate. Then, you are faced with many difficult choices; enter the irradiated chamber of Project Purity and sacrifice yourself, make Sarah Lyons go in you place, or simply do nothing and let Project Purity explode around you. Along with this decision, you must also decide whether or not to put the modified F.E.V. vial into The Project Purity console or not.