Cage's stubborn refusal to release the captive ark members and his unwillingness to begin negotiations towards a peaceful resolution forces Clarke to make a drastic and difficult decision. Meanwhile, Chancellor Jaha reaches his goal; and discovers it is not at all what he expected.moreless
A major setback halts Wick and Raven's plans. Jasper and Maya are witnesses to a horrible act.
Bellamy fights against time to save his friends. While getting ready for battle, Lexa and Clarke argue about what to do next.
Lexa's leadership decisions are questioned by Clarke. Meanwhile, Abby struggles to help an injured Kane.
The tension between Clarke and Abby comes to a head after Clarke crosses the line. Octavia fights for someone she loves while Raven helps Bellamy navigate Mount Weather. Jaha and Murphy encounter a stranger who may not be what they seem to be.moreless
Brutal consequences are faced by Bellamy and Lincoln. Meanwhile, Abby fights to stay in control; and Jasper confronts President Wallace.
Clarke strikes a deal with Lexa and Indra. Meanwhile, an alliance is threatened; and Monty comes up with a risky plan.
Clarke returns to Camp Jaha with troubling news. Meanwhile, Finn struggles with the aftermath of his actions.
A dangerous secret is revealed by Bellamy and Octavia.
Clarke heads with a group to Mount Weather to try and shut down their radio jamming tower. Bellamy and Octavia get into a dangerous encounter Lincoln.
Kane attempts to make peace with the Grounders, an emergency causes Jasper to enter a risky medical procedure, and the search for Clarke leads Finn to some violent actions.
Clarke is betrayed by someone she trusted. Meanwhile, Bellamy, Finn and Murphy (Richard Harmon) race to save a stranger; and tensions rise between Raven and Wick (Steve Talley).
Clarke gains an unlikely ally. Later, Abby confesses to committing a crime.
Clarke confronts Dante Wallace (Raymond J. Barry). Meanwhile, Kane interrogates one of the 100; and Abby performs emergency surgery.
An enemy returns in the Season 2 premiere. Later, Jaha makes a heroic decision.
After losing nearly all food supplies through a fire, the remaining "100" are forced to go hunting despite the constant threat of the Grounders. Clarke and Finn are caught up in the aftermath of bombing the bridge and may have to pay a high price ... Meanwhile on the Ark: Councillor Kane goes to great lengths to find and save survivors in the repercussion of major destruction.
After one of the 100 return to camp with a virus, getting many of them sick, Octavia, Finn, Jasper, and Raven devise a plot to try to hold off the grounders from war.moreless
Both the Ark and the 100 celebrate Unity Day. The Ark is devastated by first an explosion, then an attempted coup. Meanwhile, on the ground, Clarke, Finn, and Octavia set up a meeting with the grounders.moreless
Clarke and Bellamy search for supplies as winter nears. Meanwhile, Octavia helps a friend escape.
Clarke finally makes contact with the arch and Bellamy brings a grounder to the camp to try to get some answers.
Bellamy and his crew search for Octavia. Meanwhile, Raven notices a connection between Finn and Clarke.
Finn and Clarke's new relationship becomes a little more complicated. Octavia is knocked out and abducted by a Grounder.
Clarke and Finn grow closer as they try to communicate with the Ark. Meanwhile, Bellamy maintains order within the group.
An antibiotic is sought to treat Jasper's wounds. Meanwhile, Bellamy and his crew hunt for food.
A search-and-rescue mission ends in surprise. Meanwhile, Raven helps Abby craft an escape pod.
100 young criminals that have been living in space on The Arch have been sent to Earth to test if it has become inhabitable after 97 years of being abandoned after a nuclear war.moreless