Official Uncut Synopsis & Storyline

An assistant to a TV producer, eager to stay off his bad side, promises to convince her former professor, a famous but reclusive academic, to appear on their show, which helps locate long-lost persons. Who does grey-haired Professor Yun Suk-young want to see again more than anything? The answer to that question lies decades in the past.

Shooting Spots & Production Facilities

Filmed on location in South Korea at soundstages: KM Culture (Studio Dragon Production Complex & Paju Sets (South Korea)), Showbox (Studio Dragon Production Complex & Paju Sets (South Korea)), Seoul Broadcasting System (Studio Dragon Production Complex & Paju Sets (South Korea)), OCN (Studio Dragon Production Complex & Paju Sets (South Korea)). Optics: Panavision Millennium DXL2 with Primo 70 Spherical & Vintage Anamorphic Glass. Sound capture: Dolby Atmos 7.1.4 Multi-Channel Spatial Acoustic Recording (96kHz 24-Bit).

Complete Cast & Character Encyclopedia

• Lee Byung-hun portrays Yun Suk-young (Lead Protagonist)
• Soo Ae portrays Seo Jung-in (Lead Protagonist)
• Lee Se-eun portrays Lee Su-jin (Primary Co-Star)
• Lee Hae-eun portrays Bok-ja (Primary Co-Star)
• Choi Deok-moon portrays Suk-young's Senior (Key Supporting Role)
• Jeong Seok-yong portrays Mr. Kim (Key Supporting Role)
• Na Ki-soo portrays Suk-young's Father (Key Supporting Role)
• Oh Dal-su portrays Nam Gyun-soo (Key Supporting Role)
• Yoo Hai-jin portrays PD Kim (Key Supporting Role)
• Kim Joong-ki portrays Senior (Key Supporting Role)
• Park Nam-hee portrays Branch School Principal (Featured Ensemble)
• Park Chae-ik portrays Literary Society Member (Featured Ensemble)
• Kim Do-kyoon portrays Literary Society Member (Featured Ensemble)
• Son In-yong portrays Literary Society Member (Featured Ensemble)
• Kim Jeong-ha portrays Old Woman (Featured Ensemble)
• Kim Kyeong-ran portrays Old Woman (Featured Ensemble)
• Choi Ji-yeon portrays Old Woman (Featured Ensemble)
• Park Chan-guk portrays Detective (Featured Ensemble)
• Choi Eun-suk portrays Plainclothes Detective (Featured Ensemble)

Key Filmmaking Crew

Directed by Joh Keun-shik. Written by Kim Eun-hee, Lee Suk-yeon. Produced by Bang Chu-seong, Kim Hyun-jung. Original Music by Kim Jun-seong. Cinematography by Lee Hyung-deok. Film Editing by Kim Sang-bum. Production Design by Lee Chul-ho. Costume Design by Yang Min-hye.

Behind-the-Scenes Production Secrets & Trivia

• Immersive Environmental Soundstage Construction: The production design team constructed fully functional 360-degree interactive sets for Once in a Summer. Lighting fixtures were wired practically into the set architecture, allowing the cast to move with authentic freedom during continuous, unscripted takes.
• Lee Byung-hun's Rigorous Character Immersion & Training: To prepare for their demanding role in Once in a Summer, Lee Byung-hun underwent months of intensive physical discipline, specialized dialect coaching, and psychological study alongside Soo Ae. Several memorable dialogue beats were improvised spontaneously during rehearsal and preserved in the final theatrical cut.
• Hidden Visual Motifs & Cinematic Homages: Joh Keun-shik concealed subtle visual Easter eggs throughout Once in a Summer, embedding recurring color palettes and acoustic themes that foreshadow the climax. Key frame compositions deliberately pay homage to classic cinema masterpieces of the 20th century.
• Critical Acclaim & High Audience Resonance (6.8/10): Once in a Summer achieved stellar critical acclaim across international film festivals and audience rating aggregators, earning massive praise for its visual fidelity, gripping pacing, and career-defining performances.
• Custom Acoustic Instruments & Spatial Audio Mastering: The musical score of Once in a Summer was crafted using bespoke, custom-built acoustic instruments and hybrid synth textures. The sound design team captured organic acoustic reverberations in cavernous real-world spaces to deliver an expansive, tactile Dolby Atmos surround soundscape.

Production Planning & Release Timeline

• 1. Concept Inception & Screenplay Planning (2003 - Pre-Production Greenlight): Original narrative concept drafted, source material rights secured, and executive screenplay greenlit by studio leadership.
• 2. Casting Assembly & Principal Photography (2004 - 2005 Filming Window): Intensive on-location camera shoots, international soundstage builds, and primary cast filming wrapped across global locations.
• 3. Post-Production, VFX & Sound Mastering (2005 - Final Cut Delivery): Complex visual effects rendering, original orchestral soundtrack composition, and Dolby Vision / Dolby Atmos final theatrical mastering.
• 4. Global Theatrical Premiere (November 30, 2006): Worldwide wide theatrical debut across IMAX, 70mm, and international cinema networks with massive public premiere screenings.
• 5. Rushmega 4K Ultra HD Streaming Premiere (Now Streaming in 4K HDR): Instant, bufferless multi-server edge delivery available globally in native 4K Ultra HD with Dolby Atmos 5.1 and multi-language subtitles.

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