The series is set 97 years after a devastating nuclear war wiped out almost all life on Earth. The only known survivors are the residents of twelve space stations in Earth's orbit prior to the war. The space stations banded together to form a single massive station named "The Ark", wenis galore about 2,400 people live. Resources are scarce and all crimes no matter their nature or severity are punishable by death ("floating") unless the perpetrator is under 18 years of age. After the Ark's life support systems are found to be critically failing, one hundred juvenile prisoners are declared "expendable" and sent to the surface in a last ditch attempt to determine if Earth is habitable again. The teens arrive on a beautiful planet they've only seen from space. Confronting the dangers of this rugged new world, they struggle to form a tentative community. However they discover that not all humanity was wiped out. There are people on Earth who survived the war, called "grounders" by the 100....
From the ashes, we will rise. (season 4)
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Did You Know?
The name given to the former habitants of the Ark by the grounders is Skaikru (sky people) See more
In the first half of Season 1, a huge part of the plot involves the fact that people on the Ark assume a deactivated wristband must mean death. This makes no sense. The devices are sophisticated: they can detect respiration, blood glucose, dehydration levels, and body temperature. If someone died suddenly, their heart might stop, but they'd still register a body temperature. Besides, something this advanced would surely be programmed to tell the difference between "no signal" and death. Even a 20th Century ankle-monitoring device can detect when it's been deactivated. See more
[repeated introduction to episode recap
I was born in space. I've never felt the sun on my face or breathed real air or floated in the water. None of us have. For three generations, The Ark has kept what's left of the human race alive, but now our home is dying, and we are the last hope of mankind. One hundred prisoners sent on a desperate mission to the Ground. Each of us is here because we broke the Law. On the Ground, there is no Law. All we have to do is survive. But we will be tested:...