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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

A stowaway who joined the mission to protect his younger sister, Octavia. Watch the-100-s01e01 1

The Chancellor’s son, who got himself arrested just to stay with Clarke. In the series premiere of , titled "Pilot,"

As the dropship enters the atmosphere, communication with the Ark is lost. Two prisoners die when they unbuckle their seatbelts during the rocky descent. In the series premiere of

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.