After multiple failed attempts at stopping Savitar and changing the fate of Iris's death, Barry and Team Flash look to the future for answers in the upcoming episode titled "The Once and Future Flash."

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In his attempt to learn Savitar's true identity in 2024, Barry comes across a bleak and desolate Central City.  The promo for the episode includes footage of a long-haired hot mess of a future Barry Allen, Wally West in a wheelchair, and Caitlin still in Killer Frost mode.

The trailer also shows two villains making a return, Mirror Master and the Top. The duo appeared earlier in the season, and were defeated by the present-day Flash. It appears that they're back to wreaking havoc and messing with our favorite speedster. Back in 2017, Team Flash is trying to subdue Killer Frost and get Caitlin back on their side, although their attempts may seem futile given future events.

Although brief, we also get a glimpse at a different Flash costume then what we're used to. This outfit isn't drastically different from present Barry's, but the addition of gold bolts to the sleeves and the belt make for a striking visual!

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Airing Tuesdays at 8 p.m. ET/PT on The CW, "The Flash" stars Grant Gustin, Candice Patton, Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Danielle Panabaker and Keiynan Lonsdale.