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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 .

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.

The episode ends as a small scouting party reaches a river on their way to Mount Weather. Just as they celebrate, Jasper is suddenly speared through the chest by an unseen attacker, revealing they are not alone on Earth. Core Characters 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.

A stowaway who joined the mission to protect his younger sister, Octavia. Core Characters As the dropship enters the atmosphere,

A "spacewalk bandit" and daredevil who quickly forms a bond with Clarke.

A pragmatic leader and the daughter of the Ark’s chief medical officer. The 100: Pilot

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