The Sleepwalker (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

The Sleepwalker is a 15-minute Taiwanese drama about Niu Lang, a college student filming his sleepwalking roommate, Zhu Xing, for a class project. His pursuit of an authentic documentary takes an unsettling turn after an accident occurs during one late-night attempt to capture the behavior on camera.

The Sleepwalker is a 2026 Taiwanese drama short written and directed by Huang Yu-Hao. The film follows a college student who turns an observational class assignment toward the unusual nighttime behavior of his roommate.

With a 15-minute runtime, the story centers on the tension between documenting real life and becoming too involved in what is being recorded. Its premise remains focused on a small shared living space, a camera, and one event that changes the nature of the project.

The Sleepwalker movie details

Story without spoilers

College student Niu Lang decides to film his roommate, Zhu Xing, who has a habit of sleepwalking. What begins as a class project develops into an effort to create what Niu Lang considers a “true documentary,” leading him to closely pursue Zhu Xing’s nocturnal behavior.

The film’s central situation shifts when an accident occurs during one late-night attempt to record the sleepwalking. The supplied synopsis does not reveal the consequences, keeping the focus on the setup and its immediate disruption rather than explaining how the story ends.

What to expect

The Sleepwalker is identified as a drama rather than a genre thriller or horror film, so its premise is presented through a character-centered situation involving observation, filmmaking and an unexpected accident. The short format suggests a compact narrative built around Niu Lang’s project and Zhu Xing’s sleepwalking.

Viewers can expect a story shaped by the presence of a camera and the question of how far someone might go to capture an apparently authentic moment. Further details about the film’s tone, visual approach or ending are not provided.

Cast and creative team

Huang Yu-Hao serves as both director and writer of The Sleepwalker. Joshua Yang plays Niu Lang, the college student making the documentary for his class, while Chiang Kuan-hsun plays Zhu Xing, his sleepwalking roommate.

• Joshua Yang as Niu Lang
• Chiang Kuan-hsun as Zhu Xing

Release and production context

The Sleepwalker is a Taiwanese drama with a listed release date of October 31, 2026. It has a runtime of 15 minutes and is marked as released in the supplied metadata. The original title is 夢遊先生. No spoken language or production company is listed.

Movies Dock view

The Sleepwalker offers a contained short-film premise built around a student filmmaker, a sleepwalking subject and an accident that interrupts the act of documenting. Its brief runtime leaves room for a focused exploration of the relationship between observation and participation without disclosing more than the available synopsis supports.

Film data:
TMDB