Two brothers, torn apart by a childhood massacre, face a moral crossroads: seek redemption or revenge? Former detective partners now find themselves on opposing paths.

The film tells the story of the Northeast Street Fighter A Neng who lives in Hong Kong. He was interrogated by the police as soon as he sneaked ashore. Fortunately, Jia Hui, who returned from studying abroad, rescued him. However, Jia Hui's father died of a serious illness, and the southern part of the walled city he was in charge of was watched by all forces. A Neng takes care of Jia Hui in time, and gets acquainted with Sister Hong in the western district under the lead of A Kun, who wants to reorganise the order of the city. At this time, the mysterious evil forces that have been entrenched in the North District for many years stretched out their claws