After successfully escaping her literal dark past, "Lilli" Lilith Smith is working her dream job as a preschool teacher.

Her days are now filled with laughter, cute children, and she couldn't be happier.

But on the day she met the principal, things began to turn...strange.

No one can leave, cell phones and Wi-Fi don't work, and the new rules and classroom schedule are now delivered through the PA system.

When the rules are broken, dire consequences are swiftly meted out, with death being the least of one's concerns.

Freedom is now an illusion; strange things roam the halls; the once-safe school is marked by loss; and Lilli has to figure out how to keep herself and her students alive and find a way out of this horror story.

And during her darkest hour, after unexpected betrayal, help arrives in the form of a mysterious group that seems to know what is going on.

But as she interacts with them, Lilli discovers that being rescued and being safe are not the same thing.