SMOG.

In the near future, Factories filled the planet and intoxicated the Air, Humans started living in the deserted waste where Smog covers the skies and hides the Sun. Lithops, a 12 year old girl, lives an empty dull life in this deserted world with her older sister Miasma. Imprisoned behind her gas mask and thick clothes, Lithops grows the need to break out of this prison and feel the sunlight and breathe clean air.