Somewhere outside Lima, Ohio exists a mysterious theater known as The Spotlight Room.

One day, the members of New Directions and several of their closest friends are suddenly transported there. An enormous screen hangs above the stage, capable of displaying memories, alternate universes, future possibilities, performances, original characters, and events from realities completely different from their own.

They quickly discover three rules:

1. They cannot leave until the viewing is complete.

2. Nobody can physically hurt anyone inside the theater.

3. The user controls what appears on the screen.

The theater can show anything from hilarious alternate timelines to emotional memories, spectacular performances, celebrity AUs, future versions of the characters, or completely ridiculous scenarios.