1 Series, 1 Episode
A group of 100 young exiles from the dying space station are sent down to the surface of planet Earth to find out whether it is habitable.
Having discovered Jasper may still be alive, Clarke leads a rescue party on a mission to locate him, but the group are shocked at what they find
In an attempt to treat Jasper's infected wounds, Clarke, Finn and Wells set out in search of a seaweed-like plant to make an antibiotic poultice
After the shocking death of one of their own, Clarke and Finn grow closer as they try to figure out a way to communicate with the Ark
Clarke's fledgling romance with Finn is threatened by a new arrival. After being knocked out in a fall, Octavia wakes up to find that a Grounder is watching her.
Bellamy leads his crew into Grounder territory as they search for Octavia in the forest. Raven can't help but notice the deep connection between Finn and Clarke.
Clarke and Raven make contact with the Ark, allowing Abby to guide Clarke through a dangerous medical procedure in a desperate bid to save one of their own
Clarke and Bellamy find out there may be a stash of supplies that could help the group to survive winter. They go on a mission to locate it and are brought closer together by a terrifying experience.
All hell breaks loose when Clarke and Finn's attempt to broker peace with the Grounders is interrupted by the arrival of Bellamy, Jasper and Raven
When Murphy returns to camp claiming to have been held captive and tortured by the Grounders, Clarke and Bellamy have very different opinions about how to handle the situation
When an accident causes food supplies to run low in camp, Clarke and Finn lead a group on a mission to hunt for provisions but end up in a dangerous situation
Clarke and Finn escape from a dangerous situation only to find themselves facing a new enemy, while Murphy seeks his revenge. Bellamy makes a heroic move to save Jasper and Raven faces a new danger.
Clarke pleads with Bellamy to do the right thing as the conflict on the ground comes to a head. Bellamy forces Octavia to make a difficult decision, and the situation comes to a stunning conclusion.