There are many instances where a unfortunate individual has lost their cultivation abilities. But what about a group of people? What about a whole world?
For tens of thousands years, the Celestial Plane had ruled over all other plains of existence. Only the strongest of the strong could live there. Looking down upon all other planes, they lived their lives in luxury.
However, one day a visiting Celestian(person from the Celestial Plane) killed the ruler of a lower plane on a whim. And not just any ruler, but the most beloved of all. She was known, not for her beauty, but her skills in the path of alchemy. It was said that she sacrificed a thousand years of cultivation to create millions of pills to save her people after a disastrous incident. Lower plane rulers looked up to her while higher ones wished to nurture her talent.
However, that day she was killed without knowing why. The rulers were enraged. Just because she did not come to greet the Celestian, he killed her. The joyful, sweet girl was gone.
Following her death, many stepped forward to avenge her. But they were all killed. Growing irritated with the seemingly endless attacks of her avengers, the Celestian decided to teach them a lesson they would not forget. He once again traveled to the girl's home plane. And destroyed it. In the end, not even a speck of dust remained.
With this provocation, even the most well off planes could not sit still anymore. Since Celestians dared to destroy one plane, they could do it again. They had to do something, or they could be next.
Which leads us to the present day. The lower planes banded together to destroy the Celestial Plane and succeeded. The few hundred Celestians who survived were crippled and imprisoned. However, before their execution day, they disappeared into thin air. They did not escape. According to eye wittiness, they were there one second and gone the next.
After failing to find them, the different planes gradually forgot them over the years.
...Thousands of years later...
A group of people appear in the middle of an isolated island in a high level plane.
How will this rag-tag bunch, who considered each other their greatest enemies, survive on an island with limited resources?
Will they fight? But they are crippled.
Will they band together? But they despise each other.
Will the group of demonic cultivators and righteous ones put down their differences to live peacefully in a world where they are weaker than a random fly?
Will they die off or create the greatest civilization known to man?