In the near future, central Los Angeles is surrounded by a massive wall, the result of an apparent alien invasion and occupation. While trying to find his missing son and protect the rest of his family, Will Bowman (Josh Holloway) reluctantly agrees to help the new regime hunt down members of a growing resistance movement, an organization that, unknown to Will, his wife Katie (Sarah Wayne Callies) is a member of. Peter Jacobson, Amanda Righetti, Tori Kittles co-star in this intriguing sci-fi series.