Nate is a 30-something former journalist who recently lost his position at the Washington Post following an affair with a source. He retreats to an isolated family cabin in the Cascades after his parents die in a murder-suicide. Having been disowned years earlier when his parents caught him with a boyfriend, Nate struggles with complicated feelings regarding his family. His self-imposed isolation breaks completely when he discovers armed intruders hiding in his boatshed.

Calling herself Artemis Darth Vader, this young girl behaves in ways that constantly defy expectations. She exhibits a bizarre unfamiliarity with everyday human objects like bacon and toasters, yet she maintains a commanding presence and surprising wisdom. She depends entirely on her guardian Alex for physical safety but provides him with profound emotional direction as they flee across the country.

Alex is a rugged, highly trained military man who deserted a clandestine base in northern California. He initially appears as a hostile threat when he points a gun at Nate, but his immediate collapse from a mysterious injury reveals his vulnerability. He maintains a defensive and secretive posture, prioritizing Art's safety above all other concerns.

Ricky is Nate's brother who remains distant following their family's fracture. He appears in a family photograph kept at the Oregon cabin, serving as a physical reminder of the scattered Cartwright family.

Ruth is a stern journalist who previously worked alongside Nate at the Washington Post. Even after Nate leaves the paper in disgrace, she utilizes her investigative resources to help him identify the mysterious individuals hiding in his cabin, putting herself at professional risk.

Big Eddie operates a gas and convenience store in the small mountain town of Roseland, Oregon. He recognizes Nate upon his return and provides local updates. He functions as a community anchor in the isolated region.

Benji is a young boy living in Roseland. He spends time doing his schoolwork at his father's convenience store, adding a sense of normal family life to the town.

Randy poses as a water technician to access the Cartwright cabin. His invasive questions and sudden appearance on the isolated road expose his true purpose as a covert operative searching for Alex and Art.

Laura commands authority at the clandestine military facility located in northern California. She previously subjected Alex and Art to cruel institutional practices, driving them to orchestrate a violent escape.

Operating out of a rural Pennsylvania farmhouse, Peter leads a zealous community that worships extraterrestrial phenomena. He holds a deep, historical connection to Art from his time at a military facility decades prior.

Dolores resides at the Pennsylvania farmhouse under Peter's leadership. She provides vegan meals and guides newcomers around the rural compound.

Steve Cooper hosts a conspiracy-themed radio broadcast. His wild theories about extraterrestrials provide amusement for the travelers as they drive across the country.

Jimmy works as the legitimate water technician for Douglas County. His sudden murder alerts the local residents that dangerous forces are operating in the surrounding mountains.