Meet Sally, your typical queen bee who gets everything handed to her. Unfortunately, all of that fades quickly as she becomes suspicious that someone is out to get her.
Sally begins to receive ominous phone calls, leading her to grow overcome with paranoia. And it doesn't help her anxiety when she can't remember where she was for several hours in the night.
In the mid-season finale, Sally begins to take control of the experiment in hopes of finally solving what's been happening to her. But something much larger than her prevents her from getting the answers she needs.
Sally's desperation to find out the truth leads her to make the dangerous choice to obtain drugs to help her stay alert throughout the night. She also learns important information that helps piece together who is behind the experiment.
In the special penultimate episode set entirely to music, the experiment begins to close in on Sally and she finally figures out who is behind the experiment - but that doesn't come without a big price to pay.
In the season finale, Sally tells her story on national television one month after it going viral, post the famously-publicized death of the person who helped Sally find out the truth.