In 1954 a meteor hit earth. Barry Allen was the first to investigate. He noticed something strange, so he called over his friend, Cisco Ramon, who worked with Barry. The had a secret. About a year before the meteor, something happened. There was a radioactive explosion that caused Barry to get super speed. Ever since then he has gone around Central City saving people.

He is known as the Flash. He and the rest of his team at S. T. A. R. Labs were also inventors. They created all kinds of amazing things. Barry and Cisco recognised the design of the meteor and found out that it was not a meteor at all. It was an alien spaceship.

The Flash was not the only superhero in town. There was Oliver Queen who goes by the name of The Green Arrow, and there's Kara Danvers: Supergirl. She herself was an alien, so Barry called her over to the scene to see if she would know about the mysterious alien species. She did. They were a species known as Daxamite.