在全球性的核战过后，仅存的人类躲入空间站方舟中苟延残喘。为了保存资源，控制人口，任何触犯法律的成年人都会被处以死刑。将近一百年后，空间站氧气即将耗尽，人类面临死神的威胁。为此，包括少女克拉克（Eliza Taylor-Cotter 饰）、总理之子威尔斯（Eli Goree 饰）在内的一百名少年犯被强制送往地球，他们即使危急关头的牺牲品，也是人类最后的希望。顺利抵达地球的年轻人急于摆脱方舟的束缚，克拉克则执意和几名同伴寻找供给，在此期间发现地球还有人类存在。另一方面，方舟内的政治局势波谲云诡，总理遇刺，代理总理凯恩（亨利·伊安·库斯克 Henry Ian Cusick 饰）蠢蠢欲动，人类的命运悬于一线……
播出日期: 2019-04-30
运行时间: 42 min
概述: Still reeling after receiving Monty’s message, a small group goes down to explore the mysterious new planet. Back on the Mothership, several members of Wonkru face the consequences of their decisions.
播出日期: 2019-05-07
运行时间: 42 min
概述: The team on the ground flights to survive the threat they face on the new planet. Meanwhile, Raven must join forces with an unlikely ally to save everyone on board the Mothership.
播出日期: 2019-05-14
运行时间: 42 min
概述: Clarke tries to win over the leaders of Sanctum in order to let her people stay. Meanwhile, Bellamy, Echo and Octavia discover a new threat while on a mission to retrieve the transport ship.
播出日期: 2019-05-21
运行时间: 42 min
概述: Clarke embraces the traditions of Sanctum and tries to make amends for her past actions.
播出日期: 2019-05-28
运行时间: 40 min
概述: Jordan investigates Sanctum. Meanwhile, Octavia and Diyoza discover the threats of the new planet firsthand. Lastly, Bellamy and Clarke butt heads.
播出日期: 2019-06-11
运行时间: 42 min
概述: Diyoza learns more about the mysterious Children of Gabriel while Abby continues searching for a way to save Kane.
播出日期: 2019-06-18
运行时间: 42 min
概述: Clarke’s past catches up to her.
播出日期: 2019-06-25
运行时间: 41 min
概述: Octavia and Diyoza make their way to the mysterious anomaly in search of the Old Man. Meanwhile, Murphy has an offer for Emori.
播出日期: 2019-07-09
运行时间: 42 min
概述: Bellamy must venture into enemy territory with an unlikely companion. Meanwhile, Octavia is forced to confront her past.
播出日期: 2019-07-16
运行时间: 42 min
概述: Russell seeks justice. Meanwhile, Gabriel must make a difficult choice. Lastly, the Blake siblings reunite.
播出日期: 2019-07-23
运行时间: 42 min
概述: Bellamy and Octavia must work together to save their friends. Echo is forced to face her past.
播出日期: 2019-07-30
运行时间: 42 min
概述: A special Naming Day changes everything in Sanctum. Gabriel comes face to face with an old friend.
播出日期: 2019-08-06
运行时间: 42 min
概述: Sanctum becomes a battleground between the devout and the non-believers. The mystery of the anomaly deepens.
