Forgotten Start Button

In 2025, human deep-sea probes found some ancient genetic fragments that seemed to be sealed in the deepest part of the Mariana Trench. These "ancient gene fragments" have extreme environmental stability and information versatility. They are not viruses, but more like a "master key" that can forcibly access and "rewrite" the genetic and neural coding of existing life, resetting or upgrading it to a more primitive, more basic, but also more plastic state. The scientific community ushered in an unprecedented sensation. When this forgotten start button was pressed with one's own hands... The earth became strange and terrifying.