After Barry aborts his mission to the past in
Season 1 in order to prevent
his own present from being erased, he finds that his travel has caused even bigger problems!
Yep, a rift has been a-opened to a parallel world with an alternate Flash and an evil
speedster and—it would seem—more time travelin’ and another attempt to save his mom and
dad!
— Michael Main
No, that’s not how it works. In our timeline, Barry’s mother’s already dead, and
her death is a fixed point. And nothing can change that.