Supergirlseason 4 is tackling theSuperman: Red Soncomic book storyline. TheSeason 3finale just aired on The CW and, as with most season finales for the network’s DC shows, it came with some big action and some big reveals. While the episode did put a button on much of what has been going on in the series this season, it also set the stage for a major storyline next season, which has been confirmed by showrunners Robert Rovner and Jessica Queller.

Warning: spoilers ahead for theSupergirlseason 3 finale. In the final minutes of the episode,Kara Zor-Elfinally defeated Reign, which more or less concluded the season’s story arc. The scene then shifts to Russia where we see someone who rather closely resembles our hero walking through the snow in nothing but a cloak. The figure is discovered by Russian soldiers and we’re then left with a pretty big cliffhanger. In an interview. Robert Rovner and Jessica Queller discussed the ending and revealed that they are indeed going to tackle theRed Sonstoryline next season. Here’s what Rovner had to say about it.

“For fans of the comics, I think they might recognize that the story we want to tell is inspired by the iconic DC Comics' Red Son, which told an alternate origin story forSuperman.”

Queeler added, “What happened if, as a baby, Superman landed in Russia and became a hero there instead of in America. It’s an homage to that.” Beyond that, the duo didn’t dish anything further on next season’s plans, but that’s more than enough to pique the interest of many DC fans out there. Obviously, this is going to be taking some serious liberties with the source material, as the original story, which was published by DC in 2003 and was written by Mark Millar (Kingsman,Kick-Ass), centered on theMan of Steeland not the Last Daughter of Krypton. But still, it’s a very interesting story to adapt nonetheless.

For those who may not be familiar with theSuperman: Red Sonstoryline, the book imagines what would happen if Kal-El’s pod had crashed in the Soviet Union instead of Kansas. What if Superman were raised in that kind of environment as opposed to by loving parents in the American countryside? The book takes place outside of themain DC Comics continuityand is what is known as an Elseworlds tale. Other popular examples of this includeBatman: Gotham by GaslightandKingdom Come.

This isn’t the first we’ve heard of an adaptation of this particular story. Previously,Kong: Skull Islanddirector Jordan Vogt-Roberts had pitched doingRed Sonas a movie to Warner Bros., but clearly the idea never really took off. So, instead, we’re going to get what could be a pretty interesting take on the material on the small screen.Supergirlseason 4 doesn’t yet have a premiere date locked in, but the show will be airing Sundays this fall on The CW. This news comes to us courtesy ofTV Line.