Back to the Past poster

Back to the Past

"To save tomorrow, they must survive yesterday."

Movie 2025 1h 47m 7.0 /10
Directed by Ng Yuen-Fai, Jack Lai

In the Qin Dynasty, time traveler Hong Siu-lung has spent twenty years hidden away with his family, living under the wary eyes of his former pupil who now sits on the throne as emperor. The ruler is on the verge of consolidating power after unifying the six warring states, when a covert unit... Read more

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Streaming availability last verified: January 30, 2026

About Back to the Past

In the Qin Dynasty, time traveler Hong Siu-lung has spent twenty years hidden away with his family, living under the wary eyes of his former pupil who now sits on the throne as emperor. The ruler is on the verge of consolidating power after unifying the six warring states, when a covert unit appears with future weapons that seem to hail from Hong's own era. The sudden assault tests loyalties and reshapes the balance between past and present. Forced to confront wounds, Hong and the emperor are drawn back into a rivalry that once defined their times. What follows is a paced mix of action, sci fi twists and comic banter which plays across time. Friendships form along the way.

Directed by Ng Yuen-Fai and Jack Lai, Back to the Past presents an original screenplay by Lily He, blending martial pace with time travel humor. The film positions itself as a spirited cross era adventure that blends action with humor.

Box office figures have not been publicly disclosed yet, as the film rolls out across regions. Early tracking suggests solid international appeal for a genre mash up with comic energy and pulse pounding set pieces. Its appeal spans generations worldwide.

Awards status remains uncertain, with no major nominations announced so far. The film's hybrid vibe may attract attention from genre ceremonies, and its pedigree from Ng Yuen-Fai and Jack Lai could appeal to festival programmers seeking offbeat action comedies with science fiction hooks. Its tone blends sarcasm with earnest moments.

Reception and themes lean into a clash of duty and legacy as a wanderer and an emperor must cooperate to safeguard the timeline. The story nimbly blends explosions with witty banter and uses the past to probe how choices shape a fragile future. The characters show resilience amid chaotic scenes.

Details

Release Date
December 31, 2025
Runtime
1h 47m
User Ratings
6 votes
Type
Movie
Genres
Science Fiction, Action, Comedy
Country
Hong Kong
Studio
One Cool Films +3 more
Budget
$45,000,000
Box Office
$35,517,731
External Links
View on IMDB

Official Trailer

Cast

Louis Koo

Louis Koo

Hong Siu-lung

Raymond Lam Fung

Raymond Lam Fung

Chiu Poon / Ying Ching/Chun Wong

Bai Baihe

Bai Baihe

Galie

Jessica Hsuan

Jessica Hsuan

Wu Ting-fong

Sonija Kwok Sin-Nae

Sonija Kwok Sin-Nae

Chun Ching / Kam Ching

Joyce Tang Lai-Ming

Joyce Tang Lai-Ming

Sin-yau

Michael Miu Kiu-Wai

Michael Miu Kiu-Wai

Ken

Louis Cheung

Louis Cheung

石頭

Kevin Chu

Kevin Chu

項寶兒

Wu Yue

Wu Yue

Max

Director: Ng Yuen-Fai, Jack Lai

Written by: Lily He

Frequently Asked Questions

Back to the Past is not currently available to stream, rent, or buy online in the US. Check back later for updates.

With a rating of 7.0/10 from 6 viewers, Back to the Past is well-regarded and recommended by viewers.

In the Qin Dynasty, time traveler Hong Siu-lung has spent twenty years hidden away with his family, living under the wary eyes of his former pupil who now sits on the throne as emperor. The ruler is on the verge of consolidating power after unifying the six warring states, when a covert unit appe...

Back to the Past stars Louis Koo, Raymond Lam Fung, Bai Baihe, Jessica Hsuan, and Sonija Kwok Sin-Nae.

Back to the Past was directed by Ng Yuen-Fai and Jack Lai.

Back to the Past was released on December 31, 2025.

Back to the Past is a Science Fiction, Action, and Comedy film.

Louis Koo plays Hong Siu-lung, the time-traveller at the center of the story. He’s lived in seclusion for twenty years, and his past actions draw the attention of a dangerous future.

Raymond Lam Fung plays Chiu Poon / Ying Ching/Chun Wong. These multiple roles tie him to the key figures involved in the Qin Dynasty era.

Bai Baihe stars as Galie, Jessica Hsuan plays Wu Ting-fong, and Sonija Kwok Sin-Nae portrays Chun Ching / Kam Ching.

Set in the Qin Dynasty, the film follows Hong Siu-lung, a time-traveller whose presence attracts a future team with advanced weapons. The Qin Emperor and Hong must confront a long-buried conflict as the fate of the future hangs on how they settle their past.