13 episodesFirst aired 24 April 2018
More than six years have passed since Praimfaya has ravaged the planet and killed most of the human race. As Clarke waits to hear from the group on the Ark, or in the bunker, a prison ship drops from the sky. Are they friend or foe? And what do they want?
E1Apr 201842m
Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long-awaited beacon of hope.
E2May 201842m
Octavia is forced to take guidance from an unlikely ally when the future of the bunker and all those inside it is jeopardized.
E3May 201843m
Bellamy leads the charge investigating a potential way home. Meanwhile, Clarke and Madi deal with the new, uncertain threat to their home.
E4May 201842m
Our Heroes are forced to rely on the help of Shallow Valley's dangerous new inhabitants in order to save some of their own, with surprising results.
E5May 201842m
Octavia leads her people towards Shallow Valley against the advice of Clarke and Bellamy. Meanwhile, Kane and Abby adjust to a new set of challenges.
E6Jun 201842m
Kane's attempt to prove himself useful tests Wonkru's allegiance to Octavia. Madi faces an unexpected threat inside Wonkru, forcing Clarke to make an unlikely ally.
E7Jun 201842m
Clarke and Bellamy make a startling discovery about Wonkru’s battle plans as Echo risks her friendship with Raven to complete her mission.
E8Jun 201842m
Clarke’s determination to protect Madi puts Bellamy in an impossible position.
E9Jul 201842m
The growing fractures in Wonkru threaten to explode once and for all. Meanwhile, in Shadow Valley, Murphy starts a fire, unleashing catastrophic results.
E10Jul 201842m
Monty strives to show Wonkru an alternative to war, and to the valley itself. Meanwhile, Abby’s health continues to deteriorate, along with McCreary’s patience.
E11Jul 201842m
As Clarke races to save Abby, she learns more about the trials and tribulations Wonkru faced in the bunker, and the impossible decisions they were forced to make in the dark year.
E12Jul 201842m
Octavia leads her people into war. While behind enemy lines, our heroes must overcome their differences to save Wonkru from extinction.
E13Aug 201842m
Clarke and her friends must risk everything to fight one last battle for survival, only to glimpse an even darker threat to the last living valley on Earth.