"Lucid" follows Emma Thorne, an insomniac artist whose desperate use of mysterious blue-black pills eliminates her need for sleep but reveals a horrifying truth: at precisely 7:43, the world freezes for three seconds while entities harvest human consciousness. As Emma's art begins to capture these glimpses of reality's true nature, she attracts attention from both the secretive Threshold Gallery and the entities themselves. Caught between those who want to suppress the truth and the mounting danger of "seeing too much," Emma must choose between hiding from reality or using her art to help humanity perceive the world as it truly is—even if it costs her everything.