Singer and actor Richie Ren is no stranger when it comes to Hong Kong cinema, as he is best known for his stand out performance in Johnnie To's “Breaking News” (2004) and later in “Trivisa” (2015). In “Fierce Cop”, a Mainland online film streaming on Youku video platform is his first venture into the martial arts genre.

Set in country M, somewhere in Southeast Asia, there lives Zhang Tu, a middle aged single parent with a young son, Xiao Jie, who is also a hard working detective. He always asks his boss for a promotion so he can be a better role model for his son who is everything to him. One day, his son comes back from school in pain and covered with bruises, obviously a victim of bullying at school. After finding out that a bunch of young adults are responsible, he sets out to teach them a lesson by beating them up.