As the residence of Riverdale prepare for its upcoming Independence Day parade, Archie receives a phone call that will change the rest of his life forever.
Archie encourages Mad Dog to attend Riverdale High and join the football team. Jughead meets Mr. Chipping, who offers him a spot at an elite school called Stonewall Prep. Veronica is conflicted when information about her involvement in Hiram’s arrest leaks to the public.
Things take a dangerous turn when Betty and Charles track down Edgar and his Farmies. Archie and Veronica hold a car wash fundraiser at Pop’s to raise money for the community center. Elsewhere, Jughead’s first day at Stonewall Prep doesn’t go as planned. Lastly, Cheryl learns a dark family secret from Nana Rose.
When ominous videotapes begin appearing on doorsteps across Riverdale, widespread fear quickly returns to the town. At Stonewall Prep, Jughead learns about a series of mysterious disappearances that have occurred to former students at the school. Meanwhile, Archie’s plan to create a safe space for the town’s kids gets derailed when some unwanted visitors crash their Halloween party. Elsewhere, Veronica comes face to face with trouble, while Betty’s past comes back to haunt her. Lastly, a haunting at Thistlehouse rocks Cheryl and Toni to their core.
Caught between Hiram and Hermoine’s double trial, Veronica grapples with what the future holds for her family. Archie finds himself the unexpected target of the town’s local businesses. Betty and Kevin join the Junior FBI Training Program, and Jughead learns some surprising information about his family history.
As Archie struggles to keep the neighborhood kids away from Dodger’s influence, he turns to an unexpected ally for help. Jughead uncovers a mystery surrounding the author of the Baxter Brothers books, while Betty confronts Charles about his past. Finally, Veronica deals with a major shake-up at home, and Cheryl and Toni get some unexpected visitors at Thistlehouse.
Archie’s plan to host a peaceful Thanksgiving dinner at the community center quickly gets derailed when some unexpected guests arrive. Stranded at Stonewall Prep by an ice storm, Jughead and Betty search for clues about a recent death on campus. Elsewhere, while FP, Alice, Hiram and Hermoine wait out the storm together at Pop’s, Cheryl and Toni get resourceful as they host a dinner for Cheryl’s family.
As residents across Riverdale begin receiving more mysterious videotapes on their doorsteps, the seniors of Riverdale High eagerly await their college decision letters. Concerned that the stress may be getting to them, Mrs. Burble, the school's guidance counselor, meets with Betty, Archie, Veronica, Cheryl and Jughead to discuss what's plaguing them.
After declaring war on Hiram, Veronica enlists a secret weapon against her father - her Abuelita. Archie and FP team up to take Dodge down for good, while Betty and Charles investigate a series of strange attacks aimed at Betty. Elsewhere, Jughead's search for his grandpa, Forsythe Pendleton Jones I, leads to more questions than answers, while Cheryl finally makes peace with the past that's been haunting her.
As Riverdale High prepares for the championship football game against Stonewall Prep, Betty gets to work on a story about the rivalry between the schools. Archie is conflicted when Mary tells him about Uncle Frank’s troubled past. Cheryl goes head to head with Ms. Appleyard, the school’s new cheerleading coach, and Veronica hits a road block with her latest Luna Rum recipe. Finally, Jughead is forced to pick a side after the perks of attending Stonewall Prep begin to interfere with his personal life.
Determined to give Frank a second chance, Archie gives him a job at Andrew’s Construction. Betty channels her energy into taking Bret down and defeating Stonewall Prep at the Quiz Show Championship, while Veronica and Cheryl team up for an unlikely business venture. Finally, Kevin’s date with a new suitor takes a strange and unexpected turn.
Archie grows concerned for Frank after someone from his past arrives in Riverdale. Betty and Alice’s investigation into incidents at Stonewall Prep leads them on a collision course with their number one suspect. Jughead challenges Bret to a duel to settle their grievances, while Toni, Kevin and Fangs seek revenge against Nick St. Clair, who has shown up unexpectedly in Riverdale. Finally, a trip to New York City gives Veronica an opportunity to catch up with her old friend Katy Keene.
Worried about what the future may hold for him after high school, Archie seeks advice from an unlikely source -- Hiram Lodge. Meanwhile, Veronica begins to spiral after learning some devastating news about someone close to her. Finally, accusations made against Jughead leaves his future at Stonewall Prep hanging in the balance.
When a night in the woods goes horribly awry, Betty, Archie and Veronica are forced to confront what one of them may be capable of.
Alice begins shooting a documentary about Riverdale and the latest mystery involving one of its own. Meanwhile, Betty, Archie and Veronica fall deeper into a web of lies as the investigation gets underway.
Jughead and Betty confront Bret, Donna and Professor DuPont and unravel their plan to commit the perfect murder.
Kevin decides to revive Riverdale High’s tradition of hosting a variety show. But when Mr. Honey forbids him from performing a number from “Hedwig and the Angry Inch,” Kevin and the gang rally against their principal turning the variety show into a full-fledged musical that reflects the students’ inner lives and struggles. And amidst all the drama, one forbidden “showmance” begins to blossom.
Jughead and Charles follow a new lead after the contents of the latest videotape takes a sinister turn. Meanwhile, Kevin, Reggie and Fangs take their latest business venture to the next level, while Cheryl and Veronica's maple rum business faces a new threat. Finally, Archie and Betty contemplate their next steps.
After receiving a letter from the University of Iowa asking him to submit a story, Jughead works on a twisted tale about the gang's revenge fantasy against Principal Honey for all the ways he's ruined their senior year. Season Finale.