PARADISE LOST: Yeon Sang-ho Brings a Chilling New Thriller to TIFF 2026

A mother’s grief takes a disturbing turn when technology gives her a chance to see the child she lost in ** PARADISE LOST **, the latest psychological thriller from acclaimed South Korean filmmaker Yeon Sang-ho.

Making its TIFF 2026 appearance, the Korean-language film combines mystery, science fiction and psychological horror to explore what happens when technology allows grieving parents to recreate the people they have lost — and when that artificial comfort begins revealing secrets that were never meant to surface.

Plot

A bus carrying a group of children mysteriously disappears, leaving behind devastated families and unanswered questions.

Among those affected is Ryu (Kim Hyun-joo), a mother whose son vanished along with the other children. Years later, she remains consumed by grief, unable to accept that she may never know what happened to him.

Then an unexpected possibility emerges.

A new technology company has developed augmented reality glasses capable of creating remarkably lifelike versions of missing children. For grieving parents, the technology offers something seemingly impossible: the opportunity to interact with virtual recreations of the children they lost.

For Ryu, it means she can once again see her son.

The experience initially provides the emotional connection she has desperately wanted. But her memories of the boy begin to collide with increasingly disturbing events surrounding the original disappearance.

As strange developments connected to the missing bus begin to emerge, the artificial world Ryu has created starts to fracture. The arrival of unsettling truths forces her to question everything she thought she knew about her son — and the tragedy that took him away.

A Psychological Thriller About Grief and Technology

At the center of PARADISE LOST is an intriguing question: if technology could recreate someone you lost, would you really want to know what it might reveal?

The film uses augmented reality as more than a science-fiction concept. It becomes a way of examining grief, memory and the human desire to hold onto someone after they’re gone.

For Ryu, the technology initially appears to offer a form of healing. But as the boundaries between memory, artificial reality and the truth begin to blur, that comfort becomes something much more frightening.

The film promises to explore motherhood, love, trauma and responsibility, while asking whether preserving an idealized memory of someone can sometimes be more comforting than confronting the truth.

Yeon Sang-ho Returns to Korean Genre Cinema

PARADISE LOST comes from filmmaker Yeon Sang-ho, one of the most recognizable voices in contemporary Korean genre cinema.

Yeon has moved comfortably between animation, horror, science fiction, action and television, with his work often using genre concepts to examine much larger social and emotional issues.

International audiences will likely know him best for the acclaimed zombie thriller Train to Busan, while his television work includes the supernatural series Hellbound.

His connection with the Toronto International Film Festival also runs through his previous work, with Hellbound appearing at TIFF in 2021 and The Ugly in 2025.

With PARADISE LOST, Yeon once again appears to be combining an accessible genre premise with more unsettling questions about human behavior.

Cast

The film stars Kim Hyun-joo as Ryu, the grieving mother at the center of the story.

Her character provides the emotional foundation of the thriller as she attempts to reconcile the virtual version of her son with the disturbing reality surrounding his disappearance.

TIFF 2026

PARADISE LOST is part of the Toronto International Film Festival 2026, giving North American audiences the opportunity to experience Yeon Sang-ho’s latest film on the festival circuit.

Film Details

Title: PARADISE LOST
Director: Yeon Sang-ho
Country: South Korea
Year: 2026
Runtime: 101 minutes
Language: Korean
Festival: TIFF 2026
Genre: Psychological Thriller / Science Fiction / Mystery
Where to get tickets for this film: TIFF.NET