Hailey is a conceited, professional woman and self-proclaimed serial dater with no interest in marriage. She believes no one man can possess all five of her most coveted qualities. She dates different men who possess diverse qualities, until she meets the one guy who seemingly has it all.

A man dies mysteriously in the woods. Moments later he is stalking and murdering someone in a completely different environment. Meanwhile, a small group of strangers are stuck in an infinite loop. Is the killer some kind of doppelgänger? Is a mysterious social media "Challenge" responsible for his actions? Is the infinite loop the center of alternate universes taking and sending people randomly to other universes?