It's revealed that Ethel's parents are dead and were stabbed multiple times. Sheriff Keller says that Ethel claims the milkman killed her parents.

Alice decides to have Ethel stay over at their place for the night. She and Hal get into an argument over what to do for the family.

Ethel tells Betty that she was alone at her house; she doesn't have an alibi. Meanwhile, Jughead is suspicious about the milkman story. A camera zooms in on a Pep Comic that is about a milkman killer.

Penelope Blossom finds a painting Cheryl created of a sexy woman. Penelope tells Julian to find Cheryl a boyfriend.

Veronica apologizes to Archie about the previous behavior; she wants to try again with Archie. Archie thinks he and Veronica aren't a good match.

Principal Featherhead wants everything to go back to normal. Doctor Werthers convinces him to let them continue the juniors' sex education class; he plans to teach it himself.

Julian and Archie talk in the locker room about the Veronica situation. Julian pushes Archie to go out with Cheryl; he alludes to Cheryl being easy and might put out with him.

Toni invites Cheryl to a performance at the Dark Room; Cheryl declines the invite. Lizzo, a fellow Serpent, makes a pass at Toni, but Toni rebuffs her.

Clay invites Kevin to an open mic night at the Dark Room. There's some flirtation between Clay and Kevin.

Archie invites Cheryl to go watch a movie, but she turns him down. Instead, she invites him to go to the open mic night at the Dark Room.

Julian invites Veronica to watch The 7-Year Itch, but she declines. After hearing Archie is going with Cheryl to the Dark Room, she invites Julian to go to the night instead.

Ethel warns Jughead that the same milkman wasn't the one who killed her parents. She's worried that Sherrif Keller will think she's the killer since Ethel drew a bloody comic of herself killing her parents in a meat grinder. Jughead offers to take the drawing before the sheriff finds it.

Alice asks Betty to grab some clothes at Ethel's place.

Jughead finds the drawing and notices the milkman Pep Comic. He sneaks out of the room before Betty walks inside. Meanwhile, Betty finds a book about human sexuality in Ethel's drawer.

Jughead hides the milkman comic under his mattress.

At the Dark Room, Clay performs a poem. Betty and Archie aren't sure of the poem. Toni performs a sexy spoken word poem; Cheryl is enthralled by the poem and needs to leave.

Cheryl kisses Archie at her front door; she asks Archie to walk her to school. As she closes the door, Cheryl feels overwhelmed.

Betty starts reading the sexuality book. A scene is shown of all the teens dreaming and fantasizing about their crushes; they're making out with them and being very sexual. Pairings are Cheryl/Toni, Archie/Cheryl, Kevin/Clay, Veronica/Archie, Betty/Kevin, and Betty/Archie. Betty wakes up from her dream feeling hot and bothered.

Cheryl and Archie walk down the hall together holding holds. Everyone is surprised to see them together.

Doctor Werthers holds a sex education class for the juniors, but he focuses on flower pollination and bees. The teens are confused by the class. Veronica decides to hold a makeout party for the teens; Jughead backs out from the party.

Veronica and Betty talk about their relationship woes in the girl's bathroom. Cheryl overhears Veronica talking about Archie and storms out. Toni tries to speak with Cheryl about the event, but Cheryl angrily storms away from her.

Betty gives Kevin an ultimatum that they need to attend the makeout party.

Sheriff Keller, Principal Featherhead, and Doctor Werthers interrogate Jughead because a witness says they saw Jughead. As a reaction to their questioning, he says he's going to the makeout party.

Kevin focuses on Clay's body while in the locker room. Kevin asks if Clay is going to the party, but he says he's not. Clay reveals that he's gay; he asks Kevin to keep his secret.

Archie reads the sexuality book in Betty's room. Betty gives him a lesson on how to flirt and how to take things further. As Betty rubs Archie's leg, he gets turned out and has to leave.

At the party, Veronica hosts a game of Post Office: each guy has to randomly kiss a girl based on their letter. Cheryl barely kisses Fangs, Kevin and Midge awkwardly kiss, Betty and Jughead kiss, Veronica and Archie makeout, and Julian and Toni makeout.

All of the couples start pairing off. Veronica ditches Julian; she decides to stay with Jughead as an excuse to not kiss Julian.

Alice reveals she's called social services and Ethel will go back to school soon.

Jughead and Veronica bond over their love of literary references and monster movies.

Kevin and Betty kiss in one of the rooms, but they're awkward and don't push further. Cheryl and Archie makeout; Cheryl reveals she's never been with a college guy, but they push further.

In the morning, Betty is writing in her diary that she wants to be desired and wanted; she stares at Archie from her window.

Cheryl shows off her hickey to Penelope and Julian. She says she and Archie went all the way.

Betty gives Kevin her copy of the human sexuality book. She tells Kevin that he needs to bone up and learn a thing or two.

Toni and Veronica talk about the makeout party. Toni says she's playing the long game with someone. Veronica spent the entire night talking with Jughead; she's a bit interested in him.

Ethel and Jughead are called to the principal's party. Sheriff Keller and the adults found the Pep Comics and the bloody drawing under Jughead's mattress.