As a new school year begins, the town still reels from Jason Blossom's tragic death; Archie decides to pursue a career in music; Cheryl Blossom stirs up trouble.
Archie pleads with Ms Grundy to come forward with what they heard; Cheryl deals with the pressure of Jason's death; Jughead stumbles upon Archie's secret.
Cheryl comes clean about when she last saw Jason; Betty and Jughead investigate Jason's death; Veronica and Ethel investigate a shame book.
Jughead fights to keep the local drive-in open; Betty and Veronica investigate Ms Grundy, uncovering some startling information about her past.
The Blossom family move forward with Jason's funeral, and a secret agenda; Hermonie seeks Fred's help; Betty dives deeper into Jason's death.
Valerie's efforts to help Archie leads to a major fallout with Josie; Betty and Jughead's investigation brings them face-to-face with Polly.
New rumors swirl when a major piece of evidence is mysteriously destroyed; Cheryl approaches Betty with an unexpected proposal.
Archie and his friends pitch in to help Fred, but when one of them is attacked, they come up with a plan that lands them in Southside Serpent territory.
Archie receives an offer from Cheryl; Veronica befriends a classmate that her father's illegal doings has hurt; Alice prepares for revenge on the Blossoms.
Fred decides to finalize his divorce; Archie plans to win Valerie back; Betty plans a surprise birthday party for Jughead, until Cheryl spirals things out of control.
Cheryl and Polly decide to attend the Homecoming in Jason's honor, until a revelation waylays their plans; Alice turns to Archie and Veronica for help.
Archie and Veronica are shocked to learn of the arrest, and must come clean to their parents about what they uncovered; Jason's killer is revealed.
As Fred’s life hangs in the balance following the shooting at Pop’s diner, Archie struggles with the emotional aftermath of what he witnessed. Meanwhile, as Veronica steps out of her comfort zone to support Archie, she learns that her father Hiram has arrived to Riverdale earlier than expected. Elsewhere, at Pop’s diner, Pop Tate recounts the chilling details of the shooting, which leaves Jughead and Betty questioning the gunman’s true motives. Lastly, after running into Cheryl at the hospital, Betty and Kevin are surprised to learn about the fire at Thornhill.
With the gunman still at large and the residents of Riverdale on edge, Betty leads the charge to save Pop’s after learning that the diner may be forced to close its doors forever. Meanwhile, the gang becomes increasingly concerned for Archie’s well being after noticing a string of unusual behavior from him. Elsewhere, Betty and Veronica approach Cheryl and Josie for their help saving Pop’s, while Jughead’s attempt to find FP a new lawyer may have some serious repercussions. Finally, when a past betrayal unexpectedly comes to light, Veronica finds herself at a crossroads with Hiram and Hermione.
Frustrated by the lack of progress made in catching his father’s shooter, Archie takes matters into his own hands in order to send the gunman a message. Meanwhile, Veronica is thrilled when Hiram’s attempt to start fresh means she gets to introduce him to her friends, including Archie. Elsewhere, Jughead starts his first day at Southside High and is befriended by a Southside Serpent named Toni, while Kevin’s attempt at having a little fun causes Betty to grow concerned for his safety. Finally, an unexpected turn of events leads the town to realize their darkest chapter may be far from over.
When Archie’s attempt to take matters into his own hands spirals out of control, Mayor McCoy calls an emergency town hall meeting to deal with the growing chaos in Riverdale. Meanwhile, when Betty finds herself at the center of a deepening mystery, her decision to keep some parts of it from Jughead causes further friction between the two. Elsewhere, Veronica grows concerned for Archie when she realizes the lengths he would go to seek revenge against the person terrorizing Riverdale. Finally, tensions between the North and Southside finally come to a head and leads to an unexpected showdown.
When Alice publishes a fiery piece in the Riverdale Register blasting the Southside, Jughead is forced to take matters into his own hands to try and keep the peace. Betty turns to Archie for help after receiving an ultimatum that could potentially destroy some of her closest relationships. With their SoDale open house fast approaching, Hiram and Hermoine enlist the help of an unlikely ally to get some potential investors on board. Finally, Veronica welcomes her old friend Nick St. Clair to Riverdale, but his plans for a wild night with the gang quickly takes an unexpected turn.
After a charge led by Mayor McCoy threatens to further escalate tensions between the North and Southside, Jughead, along with Archie, tries to put a stop to a dangerous alliance being considered between the Serpents and a long-time rival. Betty turns to Veronica for help when she’s thrust into the center of a burgeoning mystery surrounding The Sugarman. Finally, Cheryl confronts her mother Penelope after a traumatic run-in forces her to make a stark realization.
Riverdale remains on edge after a chilling letter from the Black Hood challenges the town’s residents to remain sinless for 48 hours – or he’ll strike again. Meanwhile, Jughead and Archie’s friendship gets tested after Penny Peabody unexpectedly calls in a favor that Jughead owes her. Elsewhere, Betty and Veronica team up to investigate someone who Betty thinks could be the Black Hood killer. Finally, things take an unexpected turn for Josie when a secret admirer takes things one step too far.
When Jughead learns that FP is getting released from prison, he and Betty organize a welcome home party with the Serpents to ease him back into his former life. Meanwhile, Archie and Veronica reach a crossroad in their relationship, but are forced to push their issues aside after Jughead and Betty ask them to take over the Black Hood investigation.
After snooping around for Christmas gifts, Veronica uncovers a major secret Hiram has been keeping from her. Fallout from Jughead’s encounter with Penny Peabody creates tension between him and FP. Meanwhile, a defiant Cheryl takes matters into her own hands after Penelope tells her they cannot afford Christmas this year. Finally, Betty and Archie’s vow to take down the Black Hood once and for all leads to a dangerous showdown.