The 100 - Season 4 Apr 2026

The series continues to ask, "How far are you willing to go to save your people?"

Roan (Ice Nation) and Octavia (Skaikru) struggle to maintain a fragile peace between the 13 clans as resources dwindle and the end of the world approaches. The 100 - Season 4

The artificial intelligence ALIE may be gone, but her warning was true. The remaining nuclear power plants are melting down, and a wave of radiation is set to wipe out all life on Earth in six months. The season focuses on the desperate race to find a way for the human race to survive. Key Storylines The series continues to ask, "How far are

Much of the season involves the search for a viable "Lifeboat." This includes the repair of Arkadia, the discovery of a hidden Second Dawn bunker, and the high-risk experiments with "Nightblood" to create radiation immunity. The season focuses on the desperate race to

Pay close attention to the lore introduced early on; it becomes the most critical plot point for the season's high-octane finale and the setup for Season 5.

A brutal, Hunger Games-style battle royale determines which clan gets to inhabit the bunker. Themes to Watch