Director: Bùi Thạc Chuyên
Tunnels: Sun in the Dark is a 2025 Vietnamese feature directed by Bui Thac Chuyen. Running 128 minutes, it blends drama, history, and war as it follows a small guerrilla unit living and fighting inside a hidden underground tunnel network in 1967.
What is Tunnels Sun In The Dark about?
The story unfolds beneath the surface of the countryside, where a compact team of fighters holds a stretch of underground passages during the war. Their assignment is to shield a concealed cell of intelligence operatives whose radio work makes the position strategically important. As the location draws the attention of the opposing military, the unit has to maintain the tunnels, ration limited supplies, and keep the agents hidden while pressure builds from the surface above. The film tracks the routines, hazards, and split-second decisions of confined subterranean warfare, staying close to the fighters as their narrow world grows more perilous by the day.
Cast & crew
The ensemble is led by Thai Hoa, with Quang Tuan, Ho Thu Anh, Diem Hang Lamoon, Cao Minh, Nhat Y, Khanh Ly, and Hoang Minh Triet filling out the guerrilla unit and the surrounding roles. The performances center on a group confined to close quarters, and the cast carries much of the film through physical, restrained work rather than sweeping dialogue.
Context & significance
Directed by Bui Thac Chuyen, the film is set in 1967 and dramatizes the underground tunnel systems associated with that period of the Vietnam War. It presents the events as a historical setting, focusing on the daily conditions of tunnel life rather than commentary. On IMDb the film holds a rating of 7.4. It was released in 2025 and runs 128 minutes across its drama, history, and war elements.
Where & how to watch
Tunnels: Sun in the Dark is available to stream on K-Time, where this page is free to read and watching requires signing in with a K-Time account. The title is offered with a Persian dub and Persian subtitles, so viewers in the Iranian diaspora can follow the film in Farsi. The K-Time interface is built with a Farsi-first experience in mind.