Watch The 100 S03e07 1 <2026 Release>

: Flashbacks to 97 years prior reveal that a scientist named Becca created ALIE 2.0 , an AI designed to interface biologically with humans to ensure survival. After Earth was destroyed by ALIE 1.0, Becca fled to the ground from the 13th space station, Polaris , becoming the first Commander.

: In a moment that sparked significant fan backlash, Commander Lexa is accidentally shot and killed by her advisor, Titus , while he was attempting to assassinate Clarke. Before dying, she makes Titus promise to protect Clarke. Watch The 100 S03E07 1

The seventh episode of The 100 's third season, titled "," is widely regarded as one of the most game-changing and controversial installments in the series' history. It provides a powerful synthesis of the show's past and present, revealing the true origin of Grounder mythology while delivering a major blow to the main cast. Plot Overview & Key Reveals : Flashbacks to 97 years prior reveal that