After a lesson in sex education leaves the gang more confused than ever, Veronica decides to organize a make-out party at the Pembrooke. Elsewhere, Jughead attempts to help Ethel out of some trouble only to find himself in hot water as well.

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.

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.

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.