In a big city in the desert called Valcia, only young people called 'adept' are allowed to go out. The city used to be covered with a canopy, but people can see the sky and a lot of people visit the city through the canopy now. But this inflow of people gradually changes the city...
The player assumes the role of Mary Clarissa Christie. Mary has heterochromia eyes, her right eye is gold while her left eye is blue. She originally had blue eyes but her right eye changed colours one year prior to the game's events and she has been seeing strange visions since.