"The game begins in 2277, 200 years after the Great War. The ruins of Washington, D.C. is now referred to as the Capital Wasteland and serves as the game's setting. The player takes the role of the Lone Wanderer, who grew up in Vault 101 and has left to search for their missing father, James. Along the way, the Lone Wanderer attempts to survive the threats of the wasteland while battling or aiding factions that all strive to accomplish opposing goals."
"The player character, known as the Courier, is intercepted by Benny and two Great Khans on their way to deliver a package containing the Platinum Chip to New Vegas. The Courier regains consciousness in the Goodsprings Cemetery, where Benny steals the chip, shoots them twice in the head, and leaves them for dead in a shallow grave. They are rescued by a robot named Victor, who transports them to Doc Mitchell, saving their life. Once recovered, the Courier sets out to find those responsible."
"The player is the Sole Survivor of Vault 111, referred to as Nate and Nora. The player can customize the Sole Survivor's name, gender and appearance. Fallout 4 begins on October 23, 2077, the day of the Great War. It shows the player living with their spouse and infant son, Shaun. When sirens ring out, the family runs to the nearby Vault 111, where they are cryogenically frozen for over 200 years. They awaken to witness the murder of their spouse and abduction of their child, with the story following their efforts to find those responsible and reunite with their child.
The story of Fallout 4 guides the player into its world beginning in 2287, discovering leaders of different factions with varying views of synths. These include Preston Garvey of the Minutemen which lacks a strong opinion on synths, Desdemona of the pro-synth The Railroad, Arthur Maxson of the anti-synth Brotherhood of Steel and the leader of the Institute behind the synths, "Father." (wow that was longer)
"The game begins in the year 2161, set in the post-apocalyptic world resulting from the "Great War": a nuclear exchange between China and America on October 23, 2077. The war lasted less than two hours but devastated North America. In the years before the War, American company Vault-Tec constructed underground Vaults where some citizens - and now their descendants - live safe from the harsh post-War conditions above. One of these vaults, Vault 13, has a serious problem: its water chip, an electronic device responsible for water recycling, needs to be replaced. The overseer of Vault 13 tasks one of the residents, the "Vault Dweller", with finding a replacement. With the lives of all in Vault 13 at stake, the protagonist heads out of the Vault and into the remains of California to find another water chip before the Vault runs out of water..."
"Arroyo is suffering from the worst drought on record. Faced with this hardship, the village elder asks the direct descendant of the Vault Dweller, referred to as the Chosen One, to retrieve a Garden of Eden Creation Kit, or G.E.C.K, for the village. This device can create thriving communities out of the post-apocalyptic wasteland.
After completing the Temple of Trials, the Chosen One is given the Vault Dweller's jumpsuit, a RobCo Pip-Boy 2000 device, a Vault 13 water flask, and some money to start their journey. During their travels, they learn of an entity known as the New California Republic that seeks to spread its borders and directly encounters a mysterious technologically advanced organization known as the Enclave.
Returning to Arroyo reveals the village residents were either killed or kidnapped by the Enclave, along with the inhabitants of Vault 13, to serve as human test subjects. The Enclave has modified Forced Evolutionary Virus into an airborne pathogen, intended to exterminate those who have genetic mutations, which includes the majority of the wasteland's population. The Chosen One must commandeer an oil tanker to reach the Enclave's main base on an offshore oil rig to save the imprisoned wastelanders and kidnapped village people, including the village elder."
"The television series starts 219 years after the Great War of 2077. It details the life of three main protagonists; Lucy MacLean, Squire Maximus and The Ghoul.
Ella Purnell plays Lucy from Vault 33, "an optimistic Vault-dweller with an all-American can-do spirit" and a "peaceful and idealistic nature," who sets out to the surface to rescue her father after his abduction by Raiders under the leadership of Lee Moldaver, portrayed by Sarita Choudhury. Purnell described her character as initially being "very optimistic, very naive and innocent" and her journey being about "about how much that changes when she comes up to the surface and interacts with the characters and experiences the chaos that is the wasteland."
Aaron Moten takes the role of Maximus, an aspiring young soldier "in the militaristic faction called Brotherhood of Steel," who is willing to "do anything to further the Brotherhood’s goals of bringing law and order to the wasteland." Moten described his character as being "really torn between what is a pursuit of his own personal glory and rising in the ranks with the Brotherhood."
Walton Goggins depicts The Ghoul, a former war veteran and Western actor that became a Ghoul, and turned into "a morally ambiguous bounty hunter who holds within him a 200-year history of the post-nuclear world." Casting Goggins for the role as a Ghoul was one of the first creative decisions by the two showrunners, Geneva Robertson-Dworet and Graham Wagner, with Goggins considering playing two roles at "two very different times in their life split up by a nuclear fallout" to be "complex and absurdist and satirical and subversive, which is right up my alley." Goggins also described his character as being "ruthless and pragmatic with his own kind of moral code" and as "devilishly handsome with a wicked sense of humor."
Albeit for different reasons, each of the protagonists cross paths as they pursue the same goal: to retrieve the decapitated head of Dr. Siggi Wilzig, which holds a powerful relic that "has the potential to radically change the power dynamic in this world."
The story also develops two side arches, which feature Vault 33's development after Lucy's departure in the present, and The Ghoul's life as the famous actor Cooper Howard before the Great War.
The Vault 33 arch is provided mostly by the perspective of Lucy's brother Norman, played by Moises Arias, and her cousin Chet, played by Dave Register. It was added on purpose by Robertson-Dworet and Wagner, as it allowed them to "juxtapose the violence of the wasteland with the privilege that comes with living in Vault 33" - an idea that Director Jonathan Nolan was also excited about.
The Ghoul's pre-War arch is presented as fragments of his former life as Cooper Howard, a war veteran and Western actor, who was married to Barb, a high ranking Vaul-Tec employee. Howard appeared in Vault-Tec commercials, during one of which he tried a "thumbs up" gesture, which provides the origin story for the company's Vault Boy mascot - something that Executive Producer Todd Howard considered as being "just really smart."
This page is about the Fallout Franchise, considering this explains way better than me, here is a description of Fallout from the wiki that can give you an idea what it is : "Fallout is a series of post-apocalyptic role-playing video games created by Interplay Entertainment, currently owned by Bethesda Softworks.
The franchise's timeline stretches from pre-War years, to the "future of the fifties," to the decades following the destruction of the earth by nuclear war.
With the goal of exploring ideas revolving around a futuristic, post-nuclear world, the game setting exists on an alternate timeline. This timeline was home to a world where technology progressed quickly while maintaining the cultural norms of the mid-century.
A worldwide shortage of resources such as petroleum and uranium led to a series of conflicts between the United States, Canada, China, and European powers that were known as the Resource Wars. These conflicts culminated in the breakdown of the United Nations and deployment of nuclear missiles at and by the United States, a global nuclear event known as the Great War."