With the particle accelerator ready to be reactivated, Eobard Thawne (Reverse-Flash) finally reveals his full plan: to use Barry’s speed to return to his own century, no matter the cost. But when Thawne offers Barry an impossible choice — save his mother from being murdered or let history play out to stop the singularity from destroying Central City — Barry must decide what “hero” truly means.
In the season finale, Barry Allen faces his greatest challenge yet — not a metahuman, but time itself. The Flash - Temporada 1EPS23
Here’s a text in the style of a synopsis or episode description for With the particle accelerator ready to be reactivated,
To save the future, he had to lose the past. he had to lose the past.