Lucid Dream

Lucid Dream (루시드 드림, 2017) is a South Korean sci-fi thriller directed by Kim Joon-Sung — watch online on iFILM. Investigative journalist Dae-ho has spent three years trying to find his son, who was snatched from an amusement park in broad daylight. Every lead goes cold. The one thing the police can't reach is Dae-ho's own memory of that afternoon.

With the help of a psychiatrist and a skeptical detective, he learns to enter and navigate his dreams with full awareness — rewinding, looking closer, changing angles. The technique gives him access to details his waking mind had buried. But lucid dreaming has rules, and breaking them inside someone else's subconscious carries real consequences. Ko Su carries the film on a single note of controlled desperation that never tips into melodrama.

This is a thriller that treats the dreaming mind as a crime scene — methodical, procedural, genuinely tense. Stream Lucid Dream (2017) online on iFILM.