In a realm bathed by four radiant suns, the abrupt loss of one leaves the skies dim and the people desperate for answers. Cheerful tanned sky explorer Naia and her elegant automaton companion Mano guide their airship to the legendary Tower Shrouded in Mist, determined to uncover where the missing sun came to rest. A sudden storm strands them inside its fog-shrouded halls, and while they tend to repairs they venture through the twisting corridors alive with bizarre monsters and restless spirits. Naia soon meets the tower’s commanding ghost maiden Mary, whose presence stirs a dangerous and seductive hentai tension that teases encounters heavy with big boobs, blow job, and creampie heat.