WARNING: The following contains spoilers for "Memento Mori," the sixth episode of The 100 Season 6, which premiered Tuesday on The CW.
With the true nature of the Primes ruling the alien world of Sanctum revealed, it seemed like it was only a matter of time until the last survivors from Earth arriving on board the Eligius IV would be set on a collision course with the settlement. The colonists' acted first by having the spirit of one of their own possess the body of Eligius IV leader Clarke Griffin, while her longtime friend and confidante, Bellamy Blake, may have been talked down from bloody revenge. However, a different figure from the Eligius IV is shaping up to be the one to put the conflict between the two factions into motion: Madi.
The only host bodies capable of supporting a successful mind transfer for the Primes are Nightbloods -- those with blackened blood that grants them immunity from lethal radiation. After discovering that Clarke is a Nightblood -- and with the number of Nightbloods among their own population dwindling -- the Primes welcomed her and her friends into their community.
While attempting to discover if there were any additional Nightbloods among the passengers on the Eligius IV, a rival faction known as the Children of Gabriel hunts Nightbloods to permanently end the line of Primes. Unbeknownst to either group is the fact that the only Nightblood remaining is actually Clarke's adopted daughter, Madi. And, as the last unpossessed Nightblood and keeper of the Flame from Earth, the young girl will be at the center of the inevitable conflict.
Before leaving Earth, Madi had the Flame, a microchip containing the artificial intelligence of all its previous keepers. It's regarded as a holy relic among the survivors from Earth. Clarke had helped Madi manage the overwhelming voices stored within the Flame now implanted in her own mind, including several malevolent keepers from years past. However, with Clarke now possessed by the Prime, Josephine, only Madi's loyal bodyguard, Gaia, could attempt to help her. Unfortunately, she was quickly revealed not to be up to the sudden additional responsibility.
After suffering night terrors brought about by the Flame, a sinister figure would constantly haunt Madi, trying to persuade her to kill those around her. In order to keep Gaia safe, Madi relieved her of her duties and ordered her to go far away. Gaia has seemingly complied but this leaves Madi completely at the mercy of the evil personalities within the Flame. And, after learning from Bellamy that Clarke's consciousness has been apparently completely replaced by Josephine, effectively killing her mother, Madi privately swears revenge on the entire community on Sanctum, asking the malevolent personality haunting her how to best go about killing them.
Things on Sanctum haven't been peaceful for some time as the Children of Gabriel and Primes disagree on the constant use of Nightblooded host bodies to keep the Primes alive. However, while this guerrilla war rages on, it appears that the crew of the Eligius IV may have found a way to integrate themselves into the society of the alien planet and build a new home, despite losing Clarke to the Primes, teasing the possibility of an uneasy peace as the new arrivals seek a way to develop new Nightbloods.
But, with Madi now a target of the Primes and the Children of Gabriel alike, and constantly being pushed towards violence by the voices within the Flame to avenge her mother, the likelihood of peace on Sanctum is becoming increasingly slim.
The 100 airs on The CW Tuesdays at 9 pm ET/PT. The series stars Eliza Taylor, Paige Turco, Marie Avgeropoulos, Bob Morley, Henry Ian Cusick, Lindsey Morgan, Richard Harmon and Tasya Teles.