*Spoilers* for The Flash Season 3, Episode 3 “Magenta” in this review and recap.
Barry is adjusting to life in the new timeline, which includes a first date with Iris. The couple is quickly interrupted though, as Earth-2 Harrison Wells and Jesse Quick have returned. Jesse has developed speedster abilities and Harry wants to run tests on his daughter.
We quickly see that Harry is really just looking for help to talk his daughter out of becoming a superhero. In other story lines, Wally is bummed that he doesn’t have any speed and we are introduced to a new metahuman called Magenta.