Carrie Remington seems like any other struggling waitress who's had a run of bad luck including a recent divorce. Things seem to be improving when she moves in with Ashley Dunnfield, a young woman from a wealthy background who's trying to make it on her own without assistance from her father, Richard. Ashley is thrilled when Carrie helps to win her father over, but when Carrie starts dating Richard, Ashley starts digging into her past and finds out that there is much she didn't know about her new roommate's sinister history.

An unidentified man posts a live feed on social media showing that he has kidnapped two strangers and intends to kill one before the day is out. His intention is to hold a capital "trial" online. As the authorities recognize what's happening, it becomes apparent that the online public is going to act as judge and jury.