Refugees from a war-torn country seek asylum in a small American fishing town, only the country these people are from is America... and the war they are fleeing hasn't happened yet.. As the government tries to uncover the truth behind this mysterious migration only one thing is certain: The lives of the people here -- both the townspeople and these newcomers -- will never be the same.

Jude Ellis (Steve Zahn) is the sheriff of Port Canaan, a small fishing town on the Oregon coast. Having relocated from Oakland to escape a strained marriage and a dark past as a big city cop, his goal is to build a quiet new life for himself and for, eventually, his young son. But those plans for a quiet life change instantly when 47 refugees from a war-torn country wash up on his beach seeking asylum. But the country they're from is America... and the war they're fleeing is 180 years in the future. As the Feds set out to uncover the truth behind the mysterious migration, Jude will launch an investigation of his own with the help of his loyal sheriff's deputy, and Port Canaan native, Nestor Rosario (Rick Gomez).

Reece (Natalie Martinez) is a refugee too, but she's different. She's an "Apex", a member of a genetically engineered human population that possess dramatically heightened physical and mental traits. While in the future she was a soldier -- tasked with eliminating members of the lower "Common" class -- her only goal once she arrives in Port Canaan is to find her daughter, Leah (Bailey Skodje), from whom she is separated during the Crossing, and who is then taken to a secret camp with the rest of the new arrivals. As Leah tries to adapt to her new surroundings with the other refugees, she will find herself fighting a devastating virus that she has brought with her from the future. But Reece has raised a fighter -- capable, resourceful and brave.

Leading the investigation for the Department of Homeland Security (DHS) is Emma Ren (Sandrine Holt), whose dogged pursuit of the truth is complicated by the fact that her boss, wily DHS Undersecretary Craig Lindauer (Jay Karnes), seems to know a lot more about the migration than he's telling her. Emma's second-in-command is Bryce Foster (Luc Roderique), a young, empathetic agent who comes to find himself in over his head. DHS camp guard Roy Aronson is a straight arrow, but his by-the-book nature will be tested once he becomes romantically interested in one of the refugees. Another vital member of the government team is virologist Dr. Sophie Forbin (Georgina Haig), who is inquisitive, driven and has her own personal reasons for researching the Apex phenomenon and what it could mean to the future of science.

The survivors who fled the future in search of a better life include Caleb (Marcuis W. Harris) and his wife, Rebecca (Simone Kessell), who are still struggling with the painful loss of their daughter; Hannah (Kelley Missal), whose sweet exterior masks a gritty survivor who has learned the hard way what it takes to survive; and Paul (Rob Campbell) who is anxious, haunted and desperate to see the outside world.

The news of this mysterious arrival will have the locals buzzing with their own theories, including twentysomething-year-old Marshall (Tommy Bastow), whose disdain for rules and authority will put him on a collision course with some very powerful people once he starts peeling back the layers of the refugee mystery.

As the search for answers in this small town gets underway, the lives of the people here -- both the townspeople and these newcomers -- will never be the same.