When recently widowed father David Kim (John Cho
) misses several late-night FaceTime calls from his 16-year-old daughter Margot (Michelle La
) and discovers the next morning that she's missing, he breaks into her laptop to look for clues.
Detective Rosemary Vick (Debra Messing) is assigned to the case, and with her help, David begins digging through his daughter’s search history and the live-streaming services he didn't know she used. Although David hopes Margot has merely run away, as the evidence piles up it points to the fact that something sinister could have happened to Margot.