It stars Benjamin Yuen as Inspector Sheung Sing, a policeman who becomes embroiled in a conspiracy plaguing the high-ranking officials due to an incident that slowly costed him his life.

The drama premiered on TVB Jade in Hong Kong, Macau and on Astro On Demand in Malaysia on April 1, 2019, and aired its final episode on May 10, 2019.

She has been in a long power-struggle with Chief Superintendent Kan Kwok-Chu (Benz Hui) and Wan Sir (Lee Sing-cheong) for the position of Commissioner of Police, and in her endeavors to win merits to rise in power, she sets Bingo free, with intentions of getting him to provide her with intel during operations to ensure her stability in the police force goes smooth-sailing.

The Defected had been in the making since as early as 2016, when TVB announced its plans for more collaboration projects with Chinese media giants iQIYI and Tencent.

Chu said the story of The Defected is a homage to 90's era Hong Kong police films and television dramas, in which bravery and honour were central themes.