After being visited by a mysterious figure who arrives in Rivervale, the gang find themselves faced with unexpected ultimatums.

Unnerved by a series of strange happenings around him, Jughead's quest for answers leads him to uncover the truth about Rivervale.

Following the explosion at the Andrews residence, Archie assembles a team to help rebuild his home, while Jughead copes with his new reality. Meanwhile, at the Riverdale town hall meeting, Veronica breaks some news to the town, which later prompts a visit from her mother Hermoine. At Thornhill, Britta tries to get to the bottom of some strange happenings going on with Cheryl and Nana Rose.

After suspecting that Percival is about to make a big play, Archie, Betty and Jughead warn their friends about his potential threat to the town. Meanwhile, Toni also finds herself a target after Percival announces his plans to rid the town of gangs, including the Serpents. Finally, Cheryl makes her move against Archie, Betty and Jughead.

After learning that Percival's plan to reinvigorate Riverdale would lead to the demise of Pop's, Tabitha searches for a way to fight back. But when she is targeted by one of Percival's accomplices, the incident sends her back in time and searching for answers.

The next steps of Percival's plan catch Archie, Betty, Jughead, Veronica, Cheryl and Reggie off guard and forces them to face their past trauma.

After failing to get Pop's declared a historical landmark, Tabitha enlists Archie's help saving the diner from Percival. Betty opens up to Agent Drake about her ability to see people's evil auras. Meanwhile, after Reggie and the shareholders declare war on Veronica, she turns to Jughead for help maintaining control of the Babylonium. Finally, Cheryl reconnects with her childhood crush Heather, and Toni and Fangs continue their fight for custody of Baby Anthony.

In order to catch the Trash Bag Killer once and for all, Betty devises a plan to hold a serial killer convention in Riverdale. Elsewhere, Cheryl receives some news about Toni and Fangs that sends her spiraling, while Archie and Tabitha try to loosen the grip Percival has over his workers.

When several of their own fall prey to Percival's latest plan, Cheryl calls upon fellow witch Sabrina Spellman for help. Elsewhere, Percival gives Reggie an ultimatum.

When Archie and Veronica's attempt to negotiate with Percival doesn't go as planned, the forces of good and evil finally face off, leading to some unexpected revelations.

After coming together to stop Bailey’s comet, the gang finds themselves transported back to a simpler time — Riverdale 1955. Archie attempts to impress the new girl Veronica. Toni, Tabitha and Betty take a stand against Principal Featherhead. Meanwhile, Jughead attempts to convince the gang that they're from the future.

Riverdale High's sock hop is around the corner and Archie has his sights set on taking Veronica (Camila Mendes) to the dance. Betty is confused when Kevin appears uninterested in taking things to the next level with her. Elsewhere, Jughead takes aim at Pep Comics, and Toni attempts to convince Cheryl to let Fangs perform at the sock hop.

After enlisting Archie's help, Cheryl's plan to fool her family spirals out of control. Jughead turns to Veronica for help after finding himself in some trouble, and Betty gives Kevin an ultimatum.

At her wits end over Archie’s recent actions, Mary turns to Uncle Frank to get him back on track. Meanwhile, Betty asks Veronica for help understanding her sexuality. Elsewhere, Jughead takes action after he discovers plagiarism taking place at Pep Comics, and Cheryl and Toni’s budding attraction catches the attention of some River Vixens

In order to keep Riverdale High's basketball legacy alive, Frank and Archie recruit a new player to the team - a quiet farm boy named Reggie Mantle. Tabitha's return to school inspires Toni to start a literary society for Riverdale's Black students. Alice forces Betty to join the River Vixens, and Kevin starts a new job at the Babylonium.

Jughead and Tabitha team up to investigate a mystery involving Ray Bradbury. Cheryl asks Toni if she can attend an afterschool book club with her and other Black students. Betty and Veronica ask Archie and Reggie out on a double date, and Fangs prepares for his first big gig.

Panic ensues after Archie and the gang learn that Mrs. Thornton is accused of being a communist. Cheryl's father Clifford forces her to out gay students at Riverdale High or risk losing power over the Vixens. Meanwhile, Hiram's surprise arrival to town is quickly met with suspicion by Veronica, and Jughead devises a plan to get around a boycott of comic books.

After Principal Featherhead agrees to let Kevin present him with an original musical written by him and Clay, Kevin learns the group might not be as into it as he had hoped. Elsewhere, musical rehearsals prompt Archie to question what he wants in life, while Betty and Veronica confront what's going on between them.

Veronica sets up a screening at the Babylonium after Julian gets his hands on a stag film and invites Archie, Reggie and the guys over for a watch party. Betty unexpectedly reunites with Polly and learns about her sister's new life in New York. Elsewhere, Jughead goes to war with Dr. Werthers over his censure of comic books.

As the town's past secrets start to bubble to the surface, Jughead and the gang are forced to make a difficult decision that will change each of their lives forever.

Back in the present day and longing for her former life in Riverdale, 86-year-old Betty turns to a special friend to help her relive her last day of senior year with her friends as they were, their memories restored.