Ultimate Flash

Ultimate Flash is a reboot of DC's original Flash and is set in the Ultimate DC Universe details of the character's origin has changed, e.g Barry Allen lives in Los Angeles rather than Central City. Also, Jay Garrick is much younger than his mainstream counterpart and Barry's best friend. He is the only person who knows he's secretly the Flash. Even Iris West(who is a Assistant District Attorney in this universe) doesn't know his secret. Wally West is the Black-Flash. Also, Barry Allen is 23 years old.

Plot
Crime scene Investigator Barry Allen works in one of the fastest cites in the world -- Los Angeles. Called to a crime scene inside Cadmus Labs Research Facility(a subsidiary of LexCorp), Allen's collection of evidence accidentally exposes him to a host of experimental substances. Invisible to the naked eye, tasteless, odourless... these compounds trigger something within Allen's biochemistry, causing him to develop super-speed. After realising he's gained the the power to run faster than the speed of sound, Allen develops a slick running outfit fo disguise his identity while investigating crimes as the Flash. While experimenting with his powers, Barry discovers a downside to his abilities: the more he uses his speed, the faster his body shows signs of aging. But just as Barry begins to master his power and gets a lead on the serial killer Muemur, someone else with superhuman speed calling himself Black Flash arrives on the scene. What is worse, he knows all of Barry;s secrets and wants the Scarlet Speedster dead. He pummels Allen in their first meeting. This grief-stricken foe is revealed to be none other than a future Wally West. Haunted for years by Wally's hatred, Allen eventually learns he'll make a wrong decision that costs the lives of two JLA teammates... and Iris West.