Jay Garrick the man who said Barry's world is in danger. Says he came from a parallel Earth on which he is the Flash and the singularity Barry encountered months ago opened a pathway to his and he fell through it. He tells Barry the one he encountered whom they call Atom Smasher came from his world. And he was brought over by his arch nemesis whom he calls Zoom. Barry is incredulous as to if Jay is telling the truth. Later they encountered another one whom Jay says is called Sand Demon, Jay tries to teach Barry how to handle him. And a young cop wants to join Joe's Meta Human task force but he rejects her. But she works a case anyway.