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While exploring, the teens encounter bioluminescent forests and mutated wildlife, including a two-headed deer. Octavia Blake is attacked by a giant "river monster" while swimming, but is saved by Jasper Jordan .

In the series premiere of , titled "Pilot," 100 juvenile delinquents are exiled from a failing space station known as the Ark and sent to Earth 97 years after a nuclear apocalypse to determine if the planet is habitable. Key Plot Points Watch the-100-s01e01 1

The group lands off-course, away from their intended destination, Mount Weather , where vital food and supplies are stored. Key Plot Points The group lands off-course, away

A "spacewalk bandit" and daredevil who quickly forms a bond with Clarke. The 100: Pilot, Review | Den of Geek

The pilot effectively establishes a dual narrative: the high-stakes political struggle on the dying Ark and the "Lord of the Flies" survivalist chaos on the ground. The 100: Pilot, Review | Den of Geek

Back in space, Chancellor Jaha survives an assassination attempt by Bellamy. Abigail Griffin (Clarke's mother) narrowly avoids execution for using restricted medical supplies to save him.