Thanks to a newly released synopsis, we now know a bit about "The Flash" post-Invasion. Just earlier this week, the CW dropped a summary of their upcoming four-part superhero event, a weeklong crossover that will pit the heroes of "The Flash," "Supergirl," "Arrow" and "Legends of Tomorrow" against an invading alien race. Now, the CW has also released a summary of the first "Flash" episode that will air after that crossover -- an episode titled "The Present."

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Odds are that the "present" that title refers to packs multiple meanings, considering that the Flash so often dabbles in time travel and the December 6 episode also happens to be a Christmas episode. The installment will also see the return of Earth-3's Jay Garrick, played by John Wesley Shipp. As with the previous appearances of the real Jay Garrick (and not the evil imposter that tormented team Flash throughout season two), it looks like he'll be giving Barry some moral support.

BARRY SEEKS HELP FROM JAY GARRICK — With Alchemy and Savitar still looming threats, Barry (Grant Gustin) is unable to focus on the Christmas holiday, and especially his relationship with Iris (Candice Patton). Determined to stop Savitar, Barry goes to Earth-3 to get advice from Jay Garrick (guest star John Wesley Shipp). Wally (Keiynan Lonsdale) wants to help Barry fight Savitar and reveals that he’s been training with H.R. (Tom Cavanagh), which doesn’t go over well with Barry. As Cisco (Carlos Valdes) faces his first Christmas without his brother Dante (guest star Nicholas Gonzalez), old wounds are reopened. Rachel Talalay directed the episode with story by Aaron Helbing & Todd Helbing and teleplay by Lauren Certo.

The midseason finale of "The Flash" airs on December 6.

Starring Grant Gustin as the Scarlet Speedster, "The Flash" airs Tuesdays at 8 pm ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker, Keiynan Lonsdale and more.