When Jughead learns that an anonymous buyer has plans to tear down the local drive-in, he fights desperately to keep it open. Betty finds her friendship with Archie on the line after stumbling upon some startling information she's uncovered about Miss Grundy's past. Elsewhere, Veronica confronts her mother Hermoine about a suspicious meeting she witnessed between her mother and a shady Southside Serpent. Finally, after uncovering Betty's diary, Alice finds the perfect opportunity to destroy Archie's golden boy image.

As Fred and his crew are about to start construction he loses his crew, which could put his livelihood in jeopardy. Wanting to help his dad, Archie and his friends pitch in to help but after one of them is attacked, the gang comes up with a plan that lands them in Southside Serpent territory. With Jughead’s secret revealed, he is worried about how his friends will react. Meanwhile, Veronica and Betty suggest throwing Polly a baby shower to make her feel better, but Polly is hesitant knowing how everyone feels.

When Fred decides to finalize the divorce with Archie’s mother Mary, Archie hides his true feelings. Archie tries to win Valerie back with a romantic evening, however, Betty hijacks his plans when she decides to throw Jughead a surprise birthday party. Once Cheryl learns of the party, she decides to make it interesting and things quickly get out of control. Meanwhile, Veronica contemplates whether she should participate in the deposition to help get her Dad released.

Betty is slammed overseeing Homecoming and Reunion weekend, but Alice wants her to help with the Jason Blossom investigation. Alice turns to Archie and Veronica for help, but when Betty discovers they are working with her mom, she is not happy. After seeing his father FP start to clean up his act, Jughead wonders if it's the right time to give him another chance. Cheryl and Polly have both decided to go to Homecoming in Jason's honor, until a revelation waylays their plans. Meanwhile, Fred and Mary attend the Homecoming dance, leaving Fred to possibly reconsider the divorce.

Archie and Veronica are shocked to learn of the arrest but know they need to come clean to their parents about what they uncovered. Still hurt by the betrayal of his friends and torn over who to trust, Jughead reluctantly joins them in a quest for truth. Meanwhile, Cheryl confronts her mom about why she treats her so much worse than she ever did with Jason.

As the town’s mayoral race between Fred and Hermoine heats up, Hiram sets his sights on a new ally – Sheriff Minetta. Betty turns to Cheryl for help when she has a suspicion about the Black Hood. Meanwhile, the reveal of a dark secret forces Archie and Jughead to try and ease tensions between the Bulldogs and Serpents. Finally, on the eve of the mayoral debate, a mysterious message leaves everyone on edge.

After a gruesome discovery is made in the forest, Jughead and Betty team up to investigate Riverdale's latest mystery. As Archie navigates his new surroundings, Veronica devises a plan to bring a bit of home to him. Elsewhere, when Moose decides to join the RROTC, Kevin worries he may be pulling away from him.

When a series of suspicious roadblocks threaten to delay the opening of the speakeasy, Veronica enlists the help of Cheryl, Toni, Reggie, Kevin and Josie to ensure opening night goes off without a hitch. Elsewhere, Betty and Jughead follow different leads to learn more about the strange incidents going on in the town. Finally, some unwanted attention forces Archie to make a difficult decision about his future.

After weeks go by with no contact from Archie, Veronica devises a dangerous plan to break him out of juvie. Meanwhile, when Betty learns that Jughead has taken their investigation into Griffins & Gargoyles a step too far, she finds herself in a race against the clock to save him.

After confronting the parents, who were part of “The Midnight Club” twenty-five years ago, Betty follows some strong leads in hopes of finding out who the true Gargoyle King is. Meanwhile, Veronica’s attempt to prove Archie’s innocence lands her in hot water. Finally, Archie turns to Kevin for help making things right.