# The 100 (TV series)

The 100 (pronounced The Hundred ) is an American post-apocalyptic science fiction drama television series that premiered on March 19, 2014, on the CW, and ended on September 30, 2020. Developed by Jason Rothenberg, the series is loosely based on the young adult novel series The 100 by Kass Morgan. The 100 follows post-apocalyptic survivors from a space habitat, the Ark, who return to Earth nearly a century after a devastating nuclear apocalypse. The first people sent to Earth are a group of juvenile delinquents who encounter descendants of survivors of the nuclear disaster on the ground.
The juvenile delinquents include Clarke Griffin (Eliza Taylor), Finn Collins (Thomas McDonell), Bellamy Blake (Bob Morley), Octavia Blake (Marie Avgeropoulos), Jasper Jordan (Devon Bostick), Monty Green (Christopher Larkin), and John Murphy (Richard Harmon). Other lead characters include Clarke's mother Dr. Abby Griffin (Paige Turco), Marcus Kane (Henry Ian Cusick), and Chancellor Thelonious Jaha (Isaiah Washington), all of whom are council members on the Ark, and Raven Reyes (Lindsey Morgan), a mechanic aboard the Ark.

## Plot

Ninety-seven years after a devastating nuclear apocalypse wipes out most human life on Earth, thousands of people now live in a space station orbiting Earth, which they call the Ark. Three generations have been born in space, but when life-support systems on the Ark begin to fail, one hundred juvenile detainees are sent to Earth in a last attempt to determine whether it is habitable, or at least save resources for the remaining residents of the Ark. They discover that some humans survived the apocalypse: the Grounders, who live in clans locked in a power struggle; the Reapers, another group of grounders who have been turned into cannibals by the Mountain Men; and the Mountain Men, who live in Mount Weather, descended from those who locked themselves away before the apocalypse. Under the leadership of Clarke and Bellamy, the juveniles attempt to survive the harsh surface conditions, battle hostile grounders and establish communication with the Ark.
In the second season, forty-eight of the remaining detainees are captured and taken to Mount Weather by the Mountain Men. These are transfusing blood from imprisoned grounders as an anti-radiation treatment as their bodies have not adapted to deal with the remaining radiation on Earth. Medical tests of the forty-eight show their bone marrow will allow the Mountain Men to survive outside containment, so they begin taking the youths' bone marrow. Meanwhile, the inhabitants of the Ark have crash-landed various stations on Earth and begin an alliance with the grounders to save both their people, naming the main settlement at Alpha Station "Camp Jaha". The season ends with the massacre of the Mountain Men to save the prisoners. During this time, former Chancellor Jaha leads a group in search of a fabled "City of Light". Jaha discovers an artificial intelligence named A.L.I.E. while John Murphy finds an alarming video implying a connection between the AI and the destruction of the world.
In the third season, Alpha Station, renamed Arkadia, comes under new management when Pike, a former teacher and mentor on the Ark, is elected as chancellor and begins a war with the grounders. Pike kills an encampment of grounder warriors while they sleep, which further damages their already fragile relationship with the grounders. Furthermore, the grounder commander Lexa is killed by her mentor during a failed assassination attempt on Clarke, with whom she was romantically involved. A.L.I.E. – who was commanded to make life better for mankind – is revealed to have responded to the problem of human overpopulation by launching the nuclear apocalypse that devastated Earth, and begins to use ingestible computer chips to take control of peoples' minds. A.L.I.E. is ultimately destroyed by Clarke, but not before warning of another impending apocalyptic disaster.
In the fourth season, two dozen nuclear reactors around the world are melting down due to decades of neglect that will result in the majority of the planet becoming uninhabitable. Clarke and the others search for ways to survive the coming wave of radiation. When it is discovered that the grounders with black blood – known as the Nightbloods – can metabolize radiation, Clarke and the others attempt to recreate the formula, but fail to test it. An old bunker is discovered that can protect 1,200 people for over five years from the new apocalypse; each of the twelve clans selects a hundred people to stay in the bunker. A small group decides to return to space and attempt to survive in the remnants of the Ark. Clarke, who is now a nightblood, remains on the Earth's surface alone.
In the fifth season, six years after the meltdown of the nuclear reactors, a prisoner transport ship arrives in the only green spot left on Earth, where Clarke has been living with Madi, a young Nightblood grounder who also survived the wave of radiation that swept the planet after the meltdown. Those who survived in space and in the bunker have returned safely on the ground. A struggle for the Shallow Valley between the prisoners and a new, united clan, known as Wonkru, begins, resulting in a battle ending with the valley being destroyed. The survivors escape to space and go into cryosleep while they wait for the Earth to recover. However, Monty believes that Earth will apparently never recover and, before dying of old age, sets the prison ship on a course for a new world.
In the sixth season, after 125 years in cryosleep, Clarke, Bellamy, and the others wake up to find out that they are no longer orbiting Earth and have been brought to a new habitable world, Alpha, also known as Sanctum. After landing on this world, they discover a new society, led by ruling families known as the Primes. They also discover new dangers in this new world, and a mysterious rebel group, known as the Children of Gabriel, as well as a mysterious Anomaly. Clarke falls victim to the Primes and ends up in a battle with one for control of her body, a fight which she ultimately wins. The season ends with the deaths of most of the Primes, but also with the loss of Abby Griffin and Marcus Kane. Throughout the season, Madi is haunted through the Flame AI by the spirit of the Dark Commander, an evil grounder leader that had ruled when Indra was a child. In order to save Madi, Raven is forced to destroy the Flame, but the Dark Commander escapes.
The seventh season finds the inhabitants of Sanctum trying to find a way to live together in peace following the aftermath of the events of the previous season while battling the resurrected Dark Commander. At the same time, Clarke and others come into conflict with the mysterious Disciples, humans from another world who are convinced that Clarke holds the key to winning the last war that is coming. The season also explores the mysterious Anomaly introduced in the sixth season, now identified as a wormhole linking six planets, one of them being a regenerated Earth, together. After vanishing and being believed dead for some time, Bellamy returns but converts to the Disciple cause, having gone through a life-changing experience while stuck in the cold and treacherous mountains. After returning and converting to the Disciple cause, this leads to his death at Clarke's hands. At the end of the series, the Dark Commander is permanently killed by Indra and humanity achieves Transcendence aside from Clarke who committed murder during the test. They find out the test isn't an actual war, but a way to join the alien hive mind, which is a peaceful universal consciousness that grants immortality. Clarke returns to Earth where her surviving friends and Octavia's new boyfriend Levitt choose to join her to live out their lives, so that Clarke will not be alone. They will not have children, due to their infertility and sterility, and the series ends with Clarke's group being the last humans to ever live on the mortal plane of existence, on a pristine Earth, which is now habitable again.

## Cast and characters

* Eliza Taylor as Clarke Griffin
* Paige Turco as Abigail "Abby" Griffin (seasons 1–6; guest season 7)
* Thomas McDonell as Finn Collins (seasons 1–2)
* Eli Goree as Wells Jaha (season 1; guest season 2)
* Marie Avgeropoulos as Octavia Blake
* Bob Morley as Bellamy Blake
* Kelly Hu as Callie "Cece" Cartwig (season 1)
* Christopher Larkin as Monty Green (seasons 1–5; guest season 6)
* Devon Bostick as Jasper Jordan (seasons 1–4)
* Isaiah Washington as Thelonious Jaha (seasons 1–5)
* Henry Ian Cusick as Marcus Kane (seasons 1–6)
* Lindsey Morgan as Raven Reyes (seasons 2–7; recurring season 1)
* Ricky Whittle as Lincoln (seasons 2–3; recurring season 1)
* Richard Harmon as John Murphy (seasons 3–7; recurring seasons 1–2)
* Zach McGowan as Roan (season 4; recurring season 3; guest season 7)
* Tasya Teles as Echo / Ash (seasons 5–7; guest seasons 2–3; recurring season 4)
* Shannon Kook as Jordan Green (seasons 6–7; guest season 5)
* JR Bourne as Russell Lightbourne / Malachi / Sheidheda (season 7; recurring season 6)
* Chuku Modu as Gabriel Santiago (season 7; recurring season 6)
* Shelby Flannery as Hope Diyoza (season 7; guest season 6)