He chooses to let her die. He stops his past self from interfering. The timeline resets. Barry wakes up in the correct timeline. The Justice League exists. Everyone is alive. Bruce Wayne is Batman again.
Barry has a choice: save his mother and let millions die, or let her die and restore the world. --- Index Of Justice League Flashpoint Paradox -FREE-
Here’s the full story of (based on the 2013 animated film and the 2011 comic by Geoff Johns). Full Story Summary Prologue – The Flash’s Nightmare Barry Allen (The Flash) wakes up from a recurring nightmare where he sees his mother, Nora Allen, murdered — a crime for which his father, Henry, was wrongly convicted. Barry has always accepted this tragedy as part of his origin. But tonight, something feels different. The Change – A Broken World Barry wakes up the next morning in his lab. But things are wrong. His costume isn’t in its ring. His coworker doesn’t recognize him. He rushes home — but his house isn’t his. A stranger lives there. He chooses to let her die