It is the mid-1920s, and a resourceful young police officer named Qiao Chu Sheng (Zhang Yun Long) is on the trail of a brutal but devious killer. Realizing that the police force will need some extra help with this difficult case, he decides to form an elite crime-busting detective team. He reaches out to a young man who has recently returned from studying in Great Britain, Yu Gong Zi (Hu Yi Tian). Qiao Chu Sheng has learned that Yu Gong Zi has remarkable powers of deduction and a brilliant mind – and believes he can help crack this difficult case. To round off the team, he enlists the help of Bai You Ning (Xiao Yan), a focused young female reporter for a daily newspaper. A free-thinking, independent young woman, she has a strong sense of justice – and pledges to help catch the killer. Can the trio get to the bottom of the murder case in time to restore order – and bring the dastardly criminal to justice? “My Roommate Is a Detective” is a 2020 Chinese drama series directed by Zhang Wei Ke.