John Walker is named Captain America, and Sam and Bucky team up against a rebel group.
The Flash must deal with Abra Kadabra's sudden return to Central City. The villain is back with a vengeance and a score to settle. Meanwhile, Allegra deals with a tricky situation and Caitlin suspects something is off with Frost. Iris is forced to look at a dark moment in her past.
As Smallville celebrates its first Harvest Festival since Martha’s passing, Clark is reminded what his mother meant to him and learns a lesson that will help him move past her death. Meanwhile, Lois makes a breakthrough in the investigation of Morgan Edge. Lastly, Kyle tries to reconnect with Lana, but it seems like he might be falling back into his old ways.
A big announcement forces everyone to take stock of their current lives. Cheryl sets a risky plan in motion after learning some surprising news about Toni. Jughead tries to make sense of a strange encounter he had. Kevin and Fangs make a big decision about their future together.
Batwoman's abilities are tested like never before, while Alice's search for Kate continues. Sophie and Jacob set their sights on Coryana, and Luke and Mary contend with an unexpected guest.
Tae-sul enters enemy quarters to retrieve Seo-hae. Learning she's been put in a dire condition, he turns to a grudging Mr. Park for assistance.
Sam Wilson and Bucky Barnes realize that their futures are anything but normal.
At the amusement park with Tae-sul for her birthday, Seo-hae encounters someone unexpected. A familiar threat strikes again.
Following in his Grandpa Artie's footsteps, Archie begins to recruit Riverdale's new volunteer fire department. Toni's attempt to lure Cheryl out of Thornhill and back into daily life in Riverdale leads to more tension between the two. Elsewhere, Betty, Alice and Kevin's latest investigation leads them into conflict with Hiram. Finally, as Veronica comes up with a risky plan to support Riverdale's local businesses, Jughead and Tabitha begin to unravel an old mystery surrounding some strange sightings in the town.