The show opens underwater with the camera panning around a sea of bodies. Some alive, some deceased. How they got there is a total mystery.
Local Sheriff Jude Ellis (Steve Zahn) is sent to investigate what was reported to be a body on the beach, only to find hundreds, both on the beach and in the water. Of course, with a rescue/recovery of that magnitude, the Feds take over. Emma Ren (Sandrine Holt) leads the investigation and gets told an outlandish story involving time travel, future genocide and the next evolution of the human race.
So far, the show has legs. Its has plenty of storylines to sustain multiple seasons. I'll leave it at that and recommend watching it for yourself. If you do, let us know what you think in the comments.