Under Current

Under Current is a 2025 Hong Kong action thriller film directed by Alan Mak and starring Aaron Kwok, Simon Yam, Francis Ng, and Alex Fong. Kwok stars as a barrister who collaborates with a police officer (Ng) to investigate the mysterious death of a financial director (Yam) of a charity organisation.

Under Current
Theatrical release poster
Traditional Chinese	內幕
Simplified Chinese	内幕
Hanyu Pinyin	Nèi Mù
Jyutping	Noi6 Mok6
Directed by	Alan Mak
Written by	Alan Mak Lam Fung
Produced by	Tin Kai-man Jason Siu
Starring	Aaron Kwok Simon Yam Francis Ng Alex Fong
Production company	Emperor Motion Pictures
Distributed by	Emperor Motion Pictures
Release date	6 December 2025 (2025-12-06)
Running time	117 minutes[1]
Country	Hong Kong
Language	Cantonese

Production for Under Current officially began on 6 June 2022, and a poster was released in 2023.^[2] The film was theatrically released in Hong Kong on 6 December 2025.^[3]

Synopsis

At an annual gala, chief financial officer Yeung To is suddenly found hanged on stage. At the same time, a huge sum of $200 million disappeared. Barrister Ma Ying-fung and police inspector O Ting-pong form a temporary partnership, trying to uncover the layers of hidden truth behind the case and restore justice to society.

Cast

• Aaron Kwok as Ma Ying-fung, a barrister specialized in criminal cases who is also a taekwondo expert
• Simon Yam as Yeung To, the financial director of a charity organisation
• Francis Ng as O Ting-pong, a police officer
• Alex Fong as Ko Sing-man, the chairman of a charity organisation
• Kathy Yuen as Wan Wai-ling, the manager of a charity organisation
• Niki Chow as Wat Man-ying, a lawyer
• Gladys Li as Kwok King-ling
• Power Chan as Koo Cheuk-wah
• David Chiang as Wat King-yin
• Felix Lok as Ka Yuen-kwan
• Nina Paw as Tsang Dai-hei
• Kenneth Lai as Siu Chin-hung
• Asano Nagahide (zh) as Noguchi
• German Cheung (zh) as Killer
• Ernesto de Sousa (zh) as auditor 2 / police officer 2
• Max Cheung (zh) as Officer Lau
• Peter Chan as Mok Tsz-wing
• Rose Ma (zh-yue) as Secretary Mary
• Henry Fong Ping as Yuen Chi-man

Production

The film was first announced in March 2022 at the Hong Kong International Film & TV Market (FILMART) in March under the title Insider, with Alan Mak set to direct and to star Aaron Kwok, Simon Yam, Raymond Lam, Alex Fong, Kathy Yuen, Niki Chow and Gladys Li, with production slated to begin in May of the same year after it was postponed from February amid the fifth wave of the COVID-19 pandemic in Hong Kong. Kwok was originally scheduled to participate in a film produced in Mainland China in June, but because he had a strong interest in the film's script, Kwok rearranged his schedule to act in the film. Mak revealed the script for film took three years to complete^[4][5] On 11 May, it was reported that Lam had dropped out of the film in favor of participating in a reality TV show in China and was replaced by Francis Ng. Mak originally had William Chan in mind to replace Lam, but instead opt for Ng as the character was a middle-aged man with much life experience.^[6]

Principal photography for the film, which is now titled Under Current, began on 6 June 2022, where a production commencement ceremony was held attended by the cast and crew, hosted by Emperor Group chairman Albert Yeung.^[2][7]

Release

The film was originally scheduled to be released in 2023, as advertised on its posters and in its trailer, but no official release date has yet been confirmed.

It was later announced that Under Current will receive a theatrical release in mainland China, North America, Malaysia and Hong Kong on 6 December 2025. The film will open through Super Lion Culture Group in mainland China, Chinalion Film Distribution in North America, Brilliant Pictures in Malaysia and Brunei, and Emperor Motion Pictures in Hong Kong. In Singapore, the film is scheduled to be released by Clover Films on 11 December.^[8]