The 100

The 100 is an American post-apocalyptic Sci-Fi Dystopian drama television series developed by Jason Rothenberg, based on the book series of the same name by Kass Morgan. The series follows a group of Delinquents, who have been sent down to Earth to see if it is survivable. For the first time in nearly a century, humans have returned to planet Earth, but they're not alone.

The series premiered on The CW in the United States on March 19, 2014, attracting 2.73 million viewers on the original airing; the fifth season of the series premiered on April 24, 2018.

The series is loosely based on The 100, the first novel in the hundred series by Kass Morgan. Some characters are original characters and do not appear in the books. A few also have their personalities switched or shared. The TV series is also considered to be ahead of the book series in events. Many of the events that happen in the TV show may not happen in the books.

Plot
Set in 2149, 97 years after a nuclear apocalypse has devastated the surface of Earth, the only survivors were approximately 400 inhabitants of 12 national space stations that were in orbit at the time.

Three generations have survived in space. The Ark has strict measures, including capital punishment for those over 18 and population control, as the leaders of the Ark take steps to ensure the survival of the human race. But now, resources are running out and the Ark is dying. For the first time in nearly a century, there is talk of returning to Earth.

100 juveniles convicted of various crimes are sent to Earth to see if it is survivable. Among them are 17-year-old Clarke Griffin, the daughter of the Ark's chief medical officer and of the Ark's chief engineer; Wells Jaha, the son of Chancellor Jaha; the daredevil Finn Collins; the illegal sister Octavia Blake; her stowaway brother Bellamy Blake; the lighthearted Jasper Jordan; and the resourceful Monty Green.

Technologically blind to what’s happening to the 100 on Earth, the Ark’s leaders Chancellor Jaha, second-in-command Marcus Kane, Councilwoman Abigail Griffin and the Council are faced with difficult decisions about life, death and the continued existence of the human race.

For the 100, Earth is an alien planet; however, they quickly discover that Earth is filled with new wonders and dangers of all sorts.

With the survival of the human race entirely in their hands, the 100 must find a way to transcend their differences, unite and forge a new path on a wildly changed Earth that is primitive, intense and teeming with the unknown. Then, they discover that not all humanity was wiped out, and some survived the nuclear apocalypse: the Grounders, who live in 12 clans locked in a power struggle; the Reapers, another group of Grounders who have become cannibals; and the Mountain Men, who live in Mount Weather and locked themselves away before the apocalypse.

In the second season, the remaining 48 of the 100 are taken by the Mountain Men to Mount Weather, where they discover a community of survivors. It is eventually revealed that the Mountain Men are transfusing blood from imprisoned Grounders as an anti-radiation treatment. Medical tests of the 100 show an even more potent anti-radiation efficacy; their bone marrow will allow the Mountain Men to survive outside on the ground. Meanwhile, the inhabitants of the Ark have successfully crash-landed various stations on Earth and begun an alliance with the Grounders to save their groups of people, naming the main settlement at Alpha Station "Camp Jaha".

In the third season, Camp Jaha, now renamed Arkadia, comes under new management when Pike, a former teacher and mentor, is elected over Kane as Chancellor and begins a war with the Grounders. An artificial intelligence named A.L.I.E. was revealed to be responsible for the nuclear apocalypse that devastated Earth 97 years before the series, and she takes over the minds of nearly everyone in Arkadia and Polis – the capital city of the Grounders. In the third season finale, Clarke manages to destroy A.L.I.E. after it is revealed that the world is facing another nuclear disaster. This is due to nuclear reactors around the world that have fallen into disrepair and are irradiating Earth, once again threatening to make it uninhabitable.

In the fourth season, Clarke and the others investigate ways to survive the second nuclear apocalypse. When it is discovered that the Nightbloods, descendants of the first, original Nightbloods, including Becca, the first Commander of the Grounders and the creator of A.L.I.E, are immune to the effects of radiation, Clarke and the others attempt to recreate the serum, but their attempts failed. An old bunker is discovered that can protect 1200 people for over 5 years; each of the twelve clans select a hundred people to stay in the bunker. The others decide to return to space and survive in the remnants of the original Ark.

In the fifth season, which takes place six years after the meltdown of the nuclear reactors, a transport ship, full of prisoners, arrives in the only habitable land on Earth, known as the Shallow Valley, where Clarke and Madi, a Nightblood Grounder who also survived the wave of radiation the swept the planet after the meltdown, have been living. Meanwhile, those who survived in space and in the bunker, have returned safely on the ground. Now, a struggle for the Shallow Valley, between the prisoners and a new, united clan, known as Wonkru, begins. Later, our heroes must find the way to prevent another disaster from ever happening.

Current

 * Eliza Taylor as Clarke Griffin
 * Paige Turco as Abigail Griffin
 * Marie Avgeropoulos as Octavia Blake
 * Bob Morley as Bellamy Blake
 * Christopher Larkin as Monty Green


 * Henry Ian Cusick as Marcus Kane
 * Lindsey Morgan as Raven Reyes (Season 2 – present)
 * Richard Harmon as John Murphy (Season 3 – present)
 * Tasya Teles as Echo (Season 5 - present)

Former

 * Kelly Hu as Callie Cartwig (Season 1)
 * Eli Goree as Wells Jaha (Season 1)
 * Thomas McDonell as Finn Collins (Seasons 1 - 2)
 * Ricky Whittle as Lincoln (Seasons 2 - 3)


 * Zach McGowan as Roan (Season 4)
 * Devon Bostick as Jasper Jordan (Seasons 1 - 4)
 * Isaiah Washington as Thelonious Jaha  (Seasons 1 - 5)

Conception and development
In 2012, prior to the publication of the first book, the TV team in Alloy Entertainment pitched the idea to its partner studio at Warner Bros. TV as a potential pilot. Television producer Jason Rothenberg was drawn to the project by the idea of "sending these hundred juvenile delinquents down to the ground" in a Lord of the Flies esk fashion. Rothenberg came back with a take they liked, and the series was successfully pitched to The CW.

On May 9, 2013, it was announced that the CW ordered The 100 for midseason launch, developed by Rothenberg. The series premiered on March 19, 2014, attracting 2.73 million viewers on the original airing, making it CW's most watched new series premiere of the season, and delivered the network's best total viewer numbers in its time period in 3.5 years. Following a positive reception to the first thirteen-episode season, the CW renewed The 100 for a second series.

Rothenberg believes the series had shaky debut and didn't find its footing until episode 5. Rothenberg thought a darker storytelling and was encouraged to do so by CW President Mark Pedowitz's.

Filming
The 100 has a total of 58 episodes, with an unknown amount of episodes to come.

Music
The first season was soundtracked largely by pop jams and notable contributions by Imagine Dragons, Ben Howard, Youngblood Hawke and Disclosure with some trendy recognizable additions. As well as original music was composed by Evan Frankfort, Liz Phair, and Marc Dauer.

The second season still offered instances of contemporary music with frequent appearances by Raign, but much more of the soundtrack came from recordings of classical music and original compositions for the show by Evan Frankfort.

The third season introduced an original score composed by Tree Adams and made more use of diegetic sources, playing in the world of the show rather than as a part of the soundtrack. According to Inverse, season 3 has been by far the most cohesive in terms of music choice.

Other
The series is produced by Bonanza Productions Inc. in association with Alloy Entertainment, Warner Bros. Television, and CBS Television Studios, with executive producers Matthew Miller, Jason Rothenberg, Bharat Nalluri, Leslie Morgenstein and Gina Girolamo.

Zoic Studios does CG work for The 100, Mastersfx handles the practical effects.