In a distant future, humans had mastered the technology of space travel and could reach the various planets in the universe. However, during an exploration mission, a spaceship encountered a serious accident, causing all the crew members to go missing. As time passed, humans searched for the wreckage in the universe in an attempt to find the whereabouts of the wrecked spacecraft. However, he had not found any useful clues. Until one day, a young scientist discovered a strange mark that seemed to be emitted from a wreckage. After analysis, the scientists found that the mark was made of a mysterious substance that could cause a strong reaction in the human retina. So the scientist decided to use this mysterious substance to create an instrument that could identify extraterrestrial life. After years of research and experimentation, he finally succeeded in creating this instrument. This instrument was deployed on an exploration spaceship and humans began to search for other planets in the universe. When they arrived on a new planet, they found a strange creature on the planet with markings similar to humans on their retinas. The humans were very excited, but they soon found that these creatures were not friendly. They tried to devour the humans. In order to survive, humans had to fight against these creatures. During the battle, humans accidentally discovered that there was a mysterious substance on the retinas of these creatures, which could make them stronger. Therefore, humans began to study this substance in hopes of finding a way to use it to win. After years of research, humans have finally developed a technology that can use this mysterious substance to become more powerful and easily defeat any alien life form. However, as humans continued to explore the universe, they discovered that there were many similar creatures on other planets that tried to devour humans and use mysterious substances to gain power. Humans began to realize that they had to find a balance to prevent the spread of this creature, or they would lose their lives. So humans began to study how to control this mysterious substance to protect themselves and the entire universe.