Last week, in an attempt to make sure Savitar (Tobin Bell) never retrieved the final piece of the Philosopher’s Stone, Wally (Keiynan Lonsdale) threw it into the Speed Force. Little did he know, though, that that’s where the evil speedster was trapped and the final piece of the stone was exactly what he needed to escape. Now, Wally’s taken Savitar’s place as the Speed Force’s captive and it’s up to Barry (Grant Gustin) set him free.

“Because we did it last year, I think Barry went in knowing what to expect, more or less — but then it is not the same experience,” Gustin tells TVLine. This time, Barry’s going into the Speed Force with the full intention of taking Wally’s place and staying there forever. “He thinks it’s what he deserves, to spend the rest of eternity in the Speed Force,” Gustin tells Entertainment Weekly.

Last time, Barry was greeted by manifestations of his loved ones: Joe West (Jesse L. Martin), Iris West (Candice Patton), Henry Allen (John Wesley Shipp), and Nora Allen (Michelle Harrison). This time, he’ll be meeting manifestations of three men who have sacrificed their own lives for the greater good: Ronnie Raymond (Robbie Amell), Leonard Snart (Wentworth Miller), and Eddie Thawne (Rick Cosnett). Despite the (somewhat) friendly faces, however, the Speed Force won’t be welcoming Barry with open arms.

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“[It] takes a little bit more of an aggressive approach with Barry just because of choices that have been made since the end of season 2 leading up to where we’re at now,” Gustin says. “They use different characters that will get under Barry’s skin in a different way, but also they’re just not quite as understanding anymore because of how many decisions Barry has made that have affected time and affected the timeline. So it’s a pretty different Speed Force experience than last year.”

Seeing as how it urged Barry to accept his mother’s death in ‘The Runaway Dinosaur’ and then Barry went and created Flashpoint two episodes later, this response is totally understandable. “[Eddie and the others] are ultimately trying to help him,” Gustin explains, “even if it means teaching him a lesson in a very tough way, or throwing him a bone.”

While the number they do on Barry’s psyche is “a pretty drastic one”, Gustin adds that Wally doesn’t have it any easier. “[He] is being put through emotional turmoil that only Barry can understand.”

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