The world used to be a highly technologically advanced world, but everything changed after a world-class earthquake. After the earthquake, many unknown crystals appeared on the ground. The appearance of these crystals makes all electronic devices unusable. Humanity is in panic and society is beginning to be turbulent. But scientists in this world have discovered that crystal itself has extraordinary energy. After studying the crystal, the scientists established a new scientific system and used the crystal to re-establish the world. Of course, things are two-sided. Scientists also found that crystal has radiation. Having exposed the human body to the crystal radiation for a long period of time, the human mind will be lost. Moreover, the human body will undergo an irreversible mutation. The result of the mutation will vary from person to person. To control this change, the government began accepting and controlling these mutants. Under long term research, scientists have also found that this change can be spread. Infected people are extremely aggressive. Speed and strength have been dramatically improved. In an experimental accident, the laboratory exploded, and the mutant escaped from the detention center and destroyed the city. It is also because of this accident that people discovered that crystal can be used as a weapon in some special cases. And can damage and kill these mutants. The variant spreads too fast and the world is already broken. Humans use weapons developed by crystal to defend their home s. Although humans have retaken some cities and lived with these cities as their base. But there are still many survivors in the wild. So, the new government of mankind used the power of the crystal to build a group of high tech special forces. Used to resist the task of mutant organisms and field search and rescue.