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Following speculation about the repercussion of Barry Allen's action to go back in time and save his mother in the second season finale of "The Flash", it's now confirmed that the show is doing Flashpoint in season 3. It's the star Grant Gustin himself who confirmed the plot detail by revealing the title of the first episode.

The actor first teased fans on Monday, June 20 with a tweet which read, "Just finished reading episode 3-01 titled JK NOT GONNA TELL YOU YET! I'm SO excited to get back to work in 2 weeks. #TheFlashSeason3." He later posted another update after getting an approval from executive producer Greg Berlanti to reveal the title, "FLASHPOINT. This is not drill."

@grantgust I'm cool with you telling them the title :)

— Greg Berlanti (@GBerlanti) June 20, 2016

FLASHPOINT. This is not drill. https://t.co/nzq2NJh9pl

— Grant Gustin (@grantgust) June 20, 2016

Gustin later noted that the story would not be exactly the same with the one in the comic books. "We're definitely doing this FP thing our own way.. I've read Flashpoint, I've seen the amazing animated film. This will be its own thing," he wrote.

We're definitely doing this FP thing our own way.. I've read Flashpoint, I've seen the amazing animated film. This will be its own thing.

— Grant Gustin (@grantgust) June 20, 2016

In case you're not familiar with Flashpoint, it's an arc introduced the comic book, "The New 52", in which Barry finds himself in an alternate timeline in which his mother is not dead, but the world is completely different. Barry doesn't have his powers and most of the world's heroes are like villains.

"The Flash" season 3 premieres Tuesday, October 4 at 8/9c on The CW.