Set in the infamous Kowloon City slum in Hong Kong in the 80s, Kowloon City: Siege revolves around the journey of Lac Quan, a young illegal immigrant who comes here to seek a new life. . Thanks to the support and help of Long Quyen Phong, a loyal brother, Lac Quan gradually discovers the dark secrets and cruel underground laws here.
Accidentally caught up in the violent spiral of criminal gangs, Lac Quan and Quyen Phong are forced to engage in a tough battle against the Big Boss’s dark plot to protect the fragile peace of the gang. innocent people in Citadel.