Humanity began as primitive lungfishes, crawling out from the depths of the sea to escape predators. Humanity will end as sparkles of light, streaming across the empty voids of the universe searching for meaning. Pinhole is about the time travelers who live between what we once were and might someday become. Cassandra knows the future brings her doom but is helpless to stop it. Lionel executes murderers before they can kill but wonders who the real victims are. Dolores is ensnared in a cult that uses a machine to link their minds and bodies. Joseph strives to escape an eight-year loop he's been trapped in his whole life. Daphne searches for a murderer who kills by giving his victims cancer, but she may be the next target. Moving through time and space, their lives are intertwined, unwittingly tethered together by the same technology they use to change the world.