The Nevers begins as a mystery. Three years after a cryptic event, hundreds of people, mainly women, have manifested abilities that no one can explain. From seeing into the future to genius-level inventions, all of Victorian London is changing due to these new powered people. But how did they come by these mutations? Who controlled the triggering event? These The Nevers theories about the flying ship that sailed over the city are taking everything into consideration.
Warning: Spoilers for The Nevers Episode 1 follow. When The Nevers opens, the series skips over what created these "Touched" people and brought about their abilities. A few people indirectly discuss it, like Lord Massen, who describes it as an "attack." But it almost seems like most people have no idea anything happened. They went to bed one night and woke up the next day, and their fellow citizens had started mutating.
But as the series suggests in that opening scene, that's not what happened. It just that for those who weren't "Touched," the incident was immediately erased from their minds.
What they don't remember is that out of the storm clouds gathered over the city, a beautiful clockwork ship descended from the sky. Powered by an energy ball as bright as the sun, this birdlike, fish-shaped vehicle (which did not seem to have any passengers aboard) flew over London. As it did, people fainted and fell to their knees. As it took back off towards the heavens, the tail suddenly let loose trails of gas, with tiny iridescent particles raining down.
Some passed over the people; others absorbed the particles. Those who have the particles inside them remember. Those who were passed over, don't.
So, what was that ship? And who dispersed those particles?