Genetic mutation is the key to the evolution of species.
The evolution of humans from single-celled organisms into advanced beings was a very slow process that took tens of thousands of years. This natural process of evolution is beyond human control and follows no predictable pattern. Modern scientists have gained a deeper understanding of evolution, and their rough estimate is that a mutation cycle occurs every few hundred thousand years.
That cycle has come around again. The genes of a small number of people on Earth have mutated, turning them into extraordinary beings with strange abilities.
The future is a paradise for superpowered people!