One day, you find a stranger's phone and pick it up to examine it. As you start to dig through it, though, it isn't long before the phone's built-in software, IRIS, senses something is amiss. "Where is Sara?" it demands of you, asking for its owner. It becomes clear that you're going to need to help find Sara, and that this knock-off intelligence system is quite capable. You interact with it in a realistic mockup of a smartphone interface, inputting commands, flipping through apps, and typing in questions or comments with a prefilled palette of options.
If you thought it would be a nice, simple matter of dropping the phone off at Sara's house, you will soon find out that you are sorely mistaken. As you try to piece together the fragmented memory of the phone and unlock photos and information, you figure out a dark secret. Apparently Sara and some of her friends have gotten themselves entangled in some very dark activities, where one can allegedly watch people being killed...live.
The game is played through an interface much like a phone, and can be controlled using your mouse. You can use the keyboard to type options when prompted for responses or when a passcode is needed to access further information.
Although it starts with an interesting premise, the plot and character development is somewhat limited. Most of the choices are quite superficial, and the one meaningful one near the end is presented in a way that doesn't quite make it clear what you're doing. If you're not intrigued by the opening of Sara is Missing, you will probably not be strongly persuaded as you delve deeper in. It does have a number of good points and a few well-timed jump scares though, so if horror is your thing and you want to try something with an experimental feel, give it a shot.