American Pie Presents: The Book of Love

In East Great Falls, Michigan, Rob masturbates with a peanut butter sandwich, an act filmed by his younger brother Cody. The video is uploaded online, initiating a series of embarrassing events for Rob. His dog also tries to eat the sandwich, adding to the chaos of the scene.

At school, Rob encounters his friends Nathan and Marshall 'Lube,' both virgins. Nathan shares that his girlfriend Dana has pledged abstinence until marriage despite having previous sexual experiences. The friends discuss their romantic and sexual frustrations.

Rob and Heidi meet in the school library, where she openly states her desire to lose her virginity quickly. Their conversation highlights her eagerness to have sex, contrasting Rob's nervousness about revealing his feelings.

At the school dance, Nathan offends Dana by expecting sex, after giving her oral sex in a car. Rob tries to confess his feelings to Heidi but is interrupted. Later, he finds her about to have sex with another student, leading to a reflexive wildfire incident with a tiki torch.

While cleaning the library for detention, Rob finds 'The Bible,' an old, water-damaged sex manual compiled by students over decades. It becomes a reference for Rob's attempts to learn about sex.

Following a tip from 'The Bible,' Rob approaches Ashley in a lingerie store, compliments her, and is led into a changing room. She shows her breasts and encourages him to shoplift panties, but he gets caught and has to pay with his mother's credit card.

At Dana's church service, Nathan's mistake causes him to accidentally broadcast their intimate conversation over the PA system. Dana's father then forbids her from seeing Nathan, escalating their conflict.

Rob's mother confronts him about the credit card charge, and his sarcastic remark about wearing women's underwear is secretly filmed by Cody and posted online. Meanwhile, Rob's younger brother Cody's own embarrassing video gains millions of views.

Rob and his friends visit an experienced Canadian prostitute after misreading a page from 'The Bible.' The encounter goes awry when the elderly Monique dies during the act, causing the boys to panic and leave hurriedly.

Rob gathers his courage and tells Heidi he has feelings for her, and she reciprocates. They agree to meet later at Stifler's party, marking a turning point in their relationship.

At the party, Heidi overhears Rob shouting he's going to have sex, and Lube attempts to flirt with Ashley, who rejects him. The party becomes chaotic with drunkenness, accidental revealing of feelings, and conflicts between characters.

Rob, overwhelmed with alcohol and disappointment, attempts to have sex with a girl but vomits on her. The next morning, his mother shows him a video of the incident, further humiliating him.

Rob and his friends decide to find all the creators of 'The Bible,' starting with its author Noah Levenstein, in hopes of recreating the damaged pages and understanding the book's origins.

During the ski trip, Katie, upset about losing her virginity to Stifler, wins at strip poker. Stifler ends up outside naked and is inexplicably sodomized by a moose. Meanwhile, Nathan has sex with Dana in the ski lift control room, accidentally shutting off the power.

Rob and Heidi reconcile in the ski lifts and share a kiss. Later, they return to the cabin, where they have sex. Lube and Ashley also develop a romantic connection, culminating in a series of sexual encounters among the group.