On the day that country A discharged nuclear sewage, I was transported by the system to the tenth year of nuclear sewage pollution. There are floods here, biological mutations, and even humans have changed their appearance due to radiation. During the rescue operation, I learned that in the fifth year of nuclear sewage contamination, a scientist had studied ways to resist it. So, I jumped into the sea and traveled back to that year. But in the end, the defense method I learned required the antibodies of the last healthy person in the world, and that person was me...
