Big Brother is the 2018 Hong Kong action drama film directed by Kam Ka-wai and starring Donnie Yen and Joe Chen. The film faith launched on August 16, 2018.
A high school is in crisis, students are underachieving and worried about non-academic activities. Henry Chen, also known as Big Brother, a teacher with somewhat rusty writing skills but armed with the most experienced fists and a heart of steel, comes to enlighten and inspire students with his methods of unconventional teaching. Just as children improve their work and take advantage of the merits of the education system, problems arise. An opportunistic entrepreneur creates confusion by sending a heterogeneous band of fighters to conquer the land in order to turn the completely frowned upon school into an apartment complex. Their approach, however, is not so convincing with Chen, as he and his beloved class will give unwanted guests the benefits of a real education.
Donnie Yen as Henry Chan (陳 俠), Class 6B instructor at Tak Chi High School who is himself a former student of the school. A troubled youth in the past, he was sent to the United States where he served as a US Army Special Forces soldier. where he suffered physiological trauma during the war. He was persuaded by his former principal to teach his alma meter, where he uses unconventional methods to help his students.
Chaney Lin as child Henry Chan.
Joe Chen as Leung Wing-sum (梁 穎 心), as a class teacher in Tak Chi who is very patient with his students.
Lok Ming-kit as Jack Li (李偉聰), Chan's student who lives with his grandmother after his parents died in a car accident and works for Law after school in the hopes of buy a big house for his grandmother.
Yu Kang as Kane Law (羅健英), a triad leader who wants to acquire the land of Tak Chi. He was Chan's rival during their childhood where Chan broke his hand in a fight, forcing him to give up his passion for the piano.
Wen Zhi as Kane Law child
Bruce Tong as Bruce Kwan (關 啟程), Chan's pupil who has a short attention span.
Chris Tong as Chris Kwan (關 啟賢), Chan's student and Bruce's younger brother who is addicted to online games due to his mother's abandonment and his father's alcoholism.
Gladys Li as Gladys Wong (王 得 男), Chan's pupil who is a tomboy who dreams of being a Formula 1 driver despite his family's objections.
Gordon Lau as Gordon Hong. Chan's pupil who is of Pakistani descent who loves to sing but faces discrimination because of his skin color.