After getting a promotion and moving to Los Angeles, 28-year-old insurance investigator Julia Brooks unearths a mysterious ammunition box filled with evidence and information that point to a murder from the past, as well as a clue to the recurring nightmare that has baffled and tormented her for years. She decides to track down the owner in the few days before starting her new role, return the box, and get answers about her haunting nightmare. As the story unfolds, we move between her present-day search for the box's owner and the events and characters in the psychotic underbelly of past and current Los Angeles to unravel the complex mystery that transforms everyone's lives.