The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will live and die.

Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.

Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her people.

Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby through enemy territories.

Clarke's arrival on the island quickly takes a turn for the worse. Meanwhile, Bellamy tries to avoid further tragedy in Arkadia.

Jasper and Bellamy go on a quest. Meanwhile, Clarke struggles to keep the peace after word of Jaha's discovery spreads.

Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.