Korean Thriller Film 'LOST PARADISE' Unites Kim Hyun Joo and Bae Hyun Sung in a Mysterious Story

Kapanlagi.com - The Korean film industry is back with exciting news at the end of 2025. CJ ENM officially announced two big names Kim Hyun Joo and Bae Hyun Sung as the main cast in the latest thriller film titled LOST PARADISE. This project marks their new collaboration with director Yeon Sangho, who previously succeeded with TRAIN TO BUSAN, HELLBOUND, and THE BEQUEATHED.

After this announcement, it marks the completion of the main cast selection and pre-production process. Filming for this movie is scheduled to begin next December. The film LOST PARADISE tells the story of Ryu So Young, a mother whose life was put on hold after the school bus carrying her son disappeared nine years ago.

This news immediately caught the public's attention as LOST PARADISE is said to be the next major project by Yeon Sangho that combines elements of technology, psychological mystery, and emotional drama between a mother and child.

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1. Announcement and Confirmation of the Main Cast

Korean thriller film Lost Paradise announces main cast (credit:instagram.com/netflixkr)

On November 27, CJ ENM confirmed through an official press release that Lost Paradise has cast Kim Hyun Joo and Bae Hyun Sung as the main leads. Both actors are reuniting with Yeon Sangho, the director known for skillfully combining emotional elements and tension within a single storyline.

This film is adapted from a popular novel by Yeon Sangho and Ryu Yongjae, the writer who was also involved in MONEY HEIST: KOREA - JOINT ECONOMIC AREA and PARASYTE: THE GREY. The genre is a futuristic thriller-suspense with the main conflict between the realities of the real world and the virtual world.

2. Synopsis and Concept of the Story of Lost Paradise

The Korean thriller film Lost Paradise announces its main cast (credit:mydramalist)

LOST PARADISE focuses on the story of a mother named Ryu Soyoung and her child Ryu Sunwoo, who become the emotional center of the film. Nine years after the incident of a school bus disappearance during a camping trip, Soyoung suddenly sees her child again but in the form of a grown teenager.

The film depicts the inner conflict of a mother struggling to understand whether her child has truly returned, or if it is merely an artificial entity in the virtual world. Set against a backdrop of advanced technology and psychological tension, LOST PARADISE attempts to blend elements of AI, family drama, and existential mystery.

3. Kim Hyun Joo's Role as a Grieving Mother

The Korean thriller film Lost Paradise announces its main cast (credit:instagram.com/netflixkr)

Kim Hyun Joo plays the character Ryu Soyoung, a mother who has lost her child for nearly a decade. In this film, she is depicted searching for the last traces of her missing child every night, until she ultimately faces an inexplicable miracle.

Her performance is said to be one of the most emotional of her career. After successfully portraying roles in HELLBOUND and THE BEQUEATHED, Kim Hyun Joo once again showcases her acting depth, reflecting feelings of loss and hope in a world that is no longer fully humane.

4. Bae Hyun Sung's Acting Transformation

Korean thriller film Lost Paradise announces main cast (credit:instagram.com/tvn_drama)

Actor Bae Hyun Sung is known for his roles in HOSPITAL PLAYLIST and OUR BLUES. In LOST PARADISE, he will appear different from his previous image by playing the character Ryu Sunwoo, a child who returns after being missing for years.

Bae Hyun Sung portrays Sunwoo with a strong emotional and mysterious aura. In an official interview released by CJ ENM, he admitted that this project is a significant challenge because his character demands an expression of duality between a human and an entity that is not entirely real.

5. Production Schedule and Fan Enthusiasm

Korean thriller film Lost Paradise announces main cast (credit:instagram.com/netflixkr)

The production process of LOST PARADISE is scheduled to begin in December, with filming locations in Seoul and Jeju Island. The film is produced by CJ ENM Studios, which is also responsible for major projects such as CONCRETE UTOPIA and THE MOON.

Although its official release schedule has not been announced, the film has garnered widespread attention for reuniting Kim Hyun Joo, Bae Hyun Sung, and director Yeon Sangho in one project. The public considers this collaboration has the potential to produce a Korean thriller with emotional depth that is rarely found.

6. Popular Q&A About Korean Films

Q: When did the film Lost Paradise start production?
A: Production is scheduled to begin in December under the auspices of CJ ENM Studios.

Q: Who is the director of the film Lost Paradise?
A: The film is directed by Yeon Sangho, the creator behind Train to Busan and Hellbound.

Q: What is the genre of the film Lost Paradise?
A: The film is a thriller-suspense genre with a futuristic theme that highlights the conflict between humans and the digital world.

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(kpl/vna)