The Summer I | Turned Pretty Season 12 Dual Au Full
In this setup, there are two versions of Cousins Beach. In Timeline A (The Golden Timeline), Susannah survives her cancer. The house is vibrant, the parties are endless, and Belly ends up with Conrad early. It is idyllic.
In Timeline B (The Ash Timeline), Susannah dies before the first summer begins. The house falls into disrepair. Conrad becomes a recluse. Jeremiah turns to partying to mask his pain. Belly arrives to find a war zone.
The "Dual AU" follows Belly as she inexplicably swaps between these timelines every time she falls asleep. Season 12 of this story would be the climax where she realizes she has to collapse the two realities, choosing which version of the Fisher brothers gets to exist.
Most AUs are either “what if” one-offs or season-long splits. Dual AU Full commits to:
Episode 1 – “The Wrong Right Choice”
Both Bellies wake up in the same Cousins beach house after a green lightning storm. The house is merged: Jeremiah’s kids’ toys are on Conrad’s medical journals. Conrad’s piano sits next to Jeremiah’s Peloton. Each Belly assumes the other is a ghost or hallucination—until they touch and feel the shock of real.
Episode 2 – “Two Truths and a Lie”
The Bellies swap lives for 48 hours to find the trigger that split time.
Episode 3 – “The Fisherman’s Daughter”
Laurel appears—but there are two of her, too. One Laurel is softer (Conrad timeline). One is sharper (Jeremiah timeline). They reveal: the storm happened because both Bellies, on the same night 12 years ago, made the same wish at the Cousins dock: “What if I chose the other brother?” the summer i turned pretty season 12 dual au full
Episode 4 – “Infinity Recast”
Conrad finds Jeremiah’s Belly crying in the kitchen. She admits: “In my world, you never said ‘it’s always been you.’ You just… left.” Conrad replies, “In my world, I never stopped saying it. I just forgot how to show it.” They almost kiss—but stop. Because she’s his Belly, but not his Belly.
Episode 5 – “Beach Ball & Scalpel”
Jeremiah confronts Conrad’s Belly on the boardwalk: “You look at him like he hung the moon. Does she look at me like that?” She tells him the truth: “She loves you. But she’s exhausted. You don’t see her tired.” Jeremiah breaks down. He’s been performing, too.
Episode 6 – “The Bonfire Confession”
Both Bellies sit across from each other at the old fire pit. No brothers. No kids. No careers. Just them.
Episode 7 – “The Third Option”
The storm returns. To close the rift, one Belly must stay in the merged timeline while the other returns alone. But the merged timeline is collapsing. They decide to break the loop: neither goes back. Instead, both Bellies walk into the sea together—and emerge as one Belly who remembers both lives. She calls Conrad and Jeremiah to the beach house. Then says: “I’m not choosing either of you. I’m choosing me. But I’d like to see if you can choose me back—without competition.”
Final Scene – “Summer, Finally”
Six months later. Belly lives alone in the Cousins house. She writes a book called The Summer I Turned Pretty (meta). Conrad visits to fix the porch light. Jeremiah shows up with the kids for a weekend. They all have dinner together. No tension. Just three people who finally grew up. Belly watches the sunset and whispers: “I turned pretty the summer I stopped asking who loved me more—and started asking who I loved myself as.”
If you’ve been scouring the internet searching for "The Summer I Turned Pretty Season 12 Dual AU," you aren't alone. While the number "12" might be a frantic typo for Season 2 (or a desperate plea for 12 seasons), the term "Dual AU" points to one of the most passionate corners of the fandom: The desire for a Dual Perspective or a "Why Not Both?" ending. In this setup, there are two versions of Cousins Beach
With the love triangle between Belly, Conrad, and Jeremiah reaching a fever pitch in Season 2, fans have taken matters into their own hands, creating a "Dual AU" that changes the game entirely. Let's dive into what this AU is and why it might just be better than the canon.
Logline:
Twelve summers. Two parallel universes. One impossible choice. In the final season, Belly Conklin doesn’t just remember what could have been—she lives both timelines at once, forcing her to reconcile the girl she was, the woman she’s become, and the two brothers who exist in every version of forever.
If you are a fan of The Summer I Turned Pretty who has watched the three seasons (plus the theoretical nine more) of character development, "The Summer I Turned Pretty Season 12 Dual AU Full" is a masterpiece of fan labor. It is dense, emotional, and often longer than the entire Harry Potter series.
It is not canon. It is better than canon. It takes the simple nostalgia of a beach house and stretches it across the multiverse.
So, grab your infinity necklace, pour a glass of lemonade, and clear your weekend. Cousins Beach is waiting—two times over.
Have you read a "Dual AU" that you think deserves the title of Season 12? Share your favorite fanfic links in the comments below. Episode 7 – “The Third Option” The storm returns
In the canon (both the books and the Amazon Prime show), Belly is forced to make an impossible choice between the brooding, tortured Conrad and the golden retriever energy of Jeremiah. It’s the classic "Team Conrad vs. Team Jeremiah" debate that has divided the fandom since Jenny Han published the first book.
However, the "Dual AU" flips the script. Instead of a triangle where someone loses, this Alternate Universe explores the concept of a throuple or a shared narrative where Belly doesn't have to choose. It takes the "Dual" aspect literally—focusing on the duality of the brothers and how they both complete different parts of Belly’s soul.
In traditional fanfiction, "Seasons" usually refer to a continuation beyond the source material. However, Season 12 is a code within the fandom for radical character aging and evolution.
The idea posits that Belly, Conrad, and Jeremiah are not stuck in the endless summer of their teenage years. Instead, "Season 12" represents a sprawling, 12-year timeline from the events of the original books. By the time we reach this hypothetical "Season 12":
These are no longer lovesick teenagers fighting over a volleyball game or a debutante ball. These are adults with careers, mortgages, divorces, and children. The "Summer" house (Cousins Beach) is now either sold, decaying, or a relic of a past life.
The "Season 12" framework allows authors to explore the consequences of the love triangle. Who actually stays together after a decade of real life? Who regrets their choice? This is where the "Dual AU" aspect becomes essential.