In the distant future, the rapid development of science and technology once brought mankind unparalleled glory. However, with the wild growth of science and technology, the balance between man and nature was broken, and a disaster called the "Gray Tide" quietly came. The sky seemed to be covered with a layer of haze, the sun's rays were ruthlessly swallowed, and the city's prosperity and vitality were fleeting.
In the dark shadow, the gray tide spreads like a raging giant beast, taking away the hope and beauty of the past. Countless people ran away in fear, and heart-rending screams resounded through the streets. The gray fog was mixed with unknown dangers, as if they were smiling at the despair of mankind.
However, on the edge of this destruction, there is still a faint light shining. Those who dare to face their fears are quietly gathering. They are the fighters of the "Vigil" organization and the hope against the darkness. In a moment of despair, they will reveal the secrets hidden behind the gray tide and do their best to protect their homeland.
This is a test of courage and faith, as well as a struggle between man and nature. Every choice and every step is mankind's resistance and challenge to fate. In the abyss where unknown and fear coexist, their story has just begun...
