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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

As the dropship enters the atmosphere, communication with the Ark is lost. Two prisoners die when they unbuckle their seatbelts during the rocky descent. Watch the-100-s01e01 1