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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

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 . Watch the-100-s01e01 1

A "spacewalk bandit" and daredevil who quickly forms a bond with Clarke. In the series premiere of , titled "Pilot,"

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. A "spacewalk bandit" and daredevil who quickly forms

A pragmatic leader and the daughter of the Ark’s chief medical officer.