The Summer I Turned Pretty: The ULTIMATE Release Schedule Guide—Season 3 Finale And The Surprise Movie

The highly-anticipated final chapter of the Belly, Conrad, and Jeremiah love triangle has officially concluded, but the story is not over. As of today, December 18, 2025, the full 11-episode run of The Summer I Turned Pretty Season 3 has aired on Prime Video, delivering the emotional conclusion to the beloved series. The season, which premiered in the middle of summer, followed Belly Conklin as she navigated her final, pivotal summer at Cousins Beach, leading to the ultimate choice between the Fisher brothers and a dramatic, tear-filled finale.

The biggest news, however, arrived just hours after the series finale dropped: a surprise announcement confirmed that the world of Cousins Beach will continue. Series creator Jenny Han and Amazon Prime Video confirmed a feature-length film is now in development, promising to be the true, definitive conclusion to the story. This article breaks down the complete Season 3 release schedule, the final episode’s details, and everything we know about the shock movie sequel.

The Summer I Turned Pretty Season 3: Cast & Complete Release Schedule

The third and final season of the Prime Video hit was based on the final book in Jenny Han’s trilogy, We’ll Always Have Summer. It was notably longer than previous seasons, with 11 episodes instead of the usual eight, giving fans extra time with the characters before the final farewell. Filming took place across various locations, including Wilmington, North Carolina, and even a pivotal trip to Paris, France, for Belly’s 22nd birthday.

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The Main Cast and Characters

The core cast returned to bring the final, heartbreaking chapters of the story to life, including the central love triangle and their families.

• Lola Tung as Isabel “Belly” Conklin
• Christopher Briney as Conrad Fisher
• Gavin Casalegno as Jeremiah “Jere” Fisher
• Sean Kaufman as Steven Conklin
• Rain Spencer as Taylor Jewel
• Jackie Chung as Laurel Park
• Rachel Blanchard as Susannah Fisher (in flashbacks/mentions)
• Kyra Sedgwick and Elsie Fisher (who joined in Season 2) also returned in supporting roles.

Full Season 3 Episode Release Schedule

The final season premiered in July 2025, maintaining the show’s tradition of a mid-summer release. The first two episodes dropped simultaneously, followed by a weekly release schedule until the finale in September.

• Episode 1: “Last Summer” — Wednesday, July 16, 2025 (Premiere)
• Episode 2: “Love Triangle” — Wednesday, July 16, 2025
• Episode 3: “The Breakup” — Wednesday, July 23, 2025
• Episode 4: “The Engagement” — Wednesday, July 30, 2025
• Episode 5: “The Wedding Dress” — Wednesday, August 6, 2025
• Episode 6: “College Life” — Wednesday, August 13, 2025
• Episode 7: “The Fight” — Wednesday, August 20, 2025
• Episode 8: “The Cancellation” — Wednesday, August 27, 2025
• Episode 9: “The Airport” — Wednesday, September 3, 2025
• Episode 10: “The Reunion” — Wednesday, September 10, 2025
• Episode 11: “We’ll Always Have Summer” — Wednesday, September 17, 2025 (Series Finale)

The Shocking Series Finale and Belly’s Final Choice

Season 3 was tasked with adapting the most controversial parts of the final book, including the dramatic engagement between Belly and Jeremiah Fisher and the eventual, inevitable conclusion of the central love triangle. The season saw Belly trying to make a life with Jeremiah while Conrad Fisher struggled to move on at Stanford.

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The penultimate episode featured the dramatic cancellation of Belly and Jeremiah’s planned wedding, a moment that saw the end of their relationship after a series of intense arguments and unresolved feelings. This event cleared the path for the long-awaited reunion.

The series finale, titled “We’ll Always Have Summer,” provided the closure fans had been waiting for. The episode culminated with Conrad Fisher surprising Belly in Paris, France, for her 22nd birthday. The scene, which mirrored the final pages of the book, confirmed that Belly and Conrad were finally back together, securing the "Team Conrad" victory that many readers and viewers had anticipated since the start of the series.

The Summer I Turned Pretty: The Movie—What We Know About the Sequel

In a move that stunned fans and critics alike, Amazon Prime Video announced a feature-length film on September 17, 2025, just hours after the Season 3 finale aired. This surprise sequel, tentatively titled The Summer I Turned Pretty: The Movie, will serve as the true, ultimate conclusion to the franchise, suggesting that even 11 episodes were not enough to wrap up every storyline.

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The announcement immediately sparked massive speculation about the movie’s plot, especially since the series finale seemingly provided a definitive ending for Belly and Conrad. The movie is confirmed to be written and directed by series creator Jenny Han, who also authored the original book trilogy. This ensures the film will stay true to the spirit and tone of the beloved source material.

Potential Movie Plot Details and Theories

While official plot details remain tightly under wraps, the announcement and the events of the series finale have led to a few major theories about what the movie will cover:

• The Time Jump: The most popular theory suggests the movie will utilize a significant time jump, picking up years after the series finale. The final book's epilogue hints at a future event that would require a large jump.
• The Wedding: Many fans believe the feature film will finally deliver the Belly and Conrad wedding that was teased in the final book, giving the couple the happily-ever-after moment that the series finale skipped over.
• Jeremiah’s Future: The movie may dedicate time to exploring Jeremiah Fisher’s life post-breakup, showing his journey to finding happiness outside of the Cousins Beach love triangle.
• Cousins Beach Farewell: The film could provide a final, emotional farewell to the iconic Cousins Beach house, which has been the heart of the entire series and the central setting for Belly’s coming-of-age story.

The casting for the movie is expected to include the full main ensemble, with Lola Tung, Christopher Briney, and Gavin Casalegno all likely to reprise their roles as the central figures. The involvement of Jenny Han as both writer and director is a huge vote of confidence that the movie will satisfy the passionate fanbase.

The Future of the TSITP Universe

With the final season having concluded its run on Prime Video and the feature film announced, the The Summer I Turned Pretty universe is transitioning from a seasonal drama to a cinematic event. The movie’s release date has not yet been announced, but given the post-production timeline of Season 3, fans should expect a wait of at least a year or more for this ultimate conclusion. News about the movie’s production start, filming locations, and official release window will be the next major updates to look out for. The legacy of Belly Conklin and the Fisher brothers will undoubtedly live on through this final, epic story.