A vengeful spirit from folklore, la Llorona arrives in Rivervale to terrorize the rainy town. Betty and Toni find themselves in the specter's path and must seek Cheryl’s help to protect the children in Rivervale, including Baby Anthony. Meanwhile, Jughead and Tabitha, along with Veronica and Reggie, experience their own hauntings that begin to put a strain on their respective relationships.

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

As Bailey's Comet passes over Rivervale, Cheryl and Nana Rose revisit the tragic stories of the Blossom women through the years. Meanwhile, the once-in-a-lifetime celestial event prompts Cheryl to summon a familiar face to Rivervale - Sabrina Spellman.

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

As news begins to spread about the bombing at the Andrew's home, Archie, Betty and Jughead begin to deal with mysterious side effects from the explosion. Elsewhere, Veronica spirals after learning that Hiram may have been involved, and Cheryl is consumed with guilt when she believes she may have had a hand in the explosion.

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 learning that Percival Pickens is behind a blistering article calling Riverdale the worst town in America, Archie comes up with a plan to prove him wrong. Meanwhile, after the Town Council goes after their casino, Veronica and Reggie decide they're going to do everything on the up-and-up moving forward. Finally, Britta makes a risky move to help Cheryl.

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.

To get the town of Riverdale out from under Percival's grip, Archie, Jughead and Betty devise a plan to turn Archie into a modern-day folk hero by performing a series of impossible feats. Meanwhile, Percival takes aim at Veronica, Toni and Tabitha, pitting them and their businesses against one another. Finally, after falling ill, Cheryl makes a surprising discovery about herself.

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.

After uncovering what Percival has planned for the town, Archie, Betty Jughead and Tabitha devise a plan to oust the current town council and instate their own. But when Percival catches wind of their secret meeting, he and Alice use an upcoming weather event to scare the town into staying in their homes... while they carry out the next step of Percival's master plan.

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.

With palladium acting as his personal kryptonite, Archie decides he must build up his tolerance if he's going to stand a chance against Percival. Betty turns to Jughead for help uncovering some repressed memories from her childhood. Meanwhile, Veronica deals with a bombshell discovery that effects how she interacts with people around her, and Cheryl debates whether she should reach out to a former childhood crush.

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.

After learning that Percival is exploiting his new work crew, Archie and Tabitha devise a plan to help protect the workers and get them out from under Percival's control. Meanwhile, Jughead finds himself with a target on his back after Percival catches wind of a scheme he and Veronica hatched against Reggie. Finally, Betty receives some unexpected news about a dark moment from her past, and Toni and Fangs find themselves at a crossroads.

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.

As the gang plan an event celebrating two of their own, strange biblical plaques around town threaten to put a damper on the special day.

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.

Archie and the gang gather intel about Percival so they can better understand where he came from and use that to their advantage. However, when their plan results in an unexpected outcome, the gang is left having to pay a terrible cost.

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.

Archie and the gang band together to save Riverdale from the greatest threat the town has ever faced.