Through cases spanning 25 years caused by a 1990 fire, police pursue justice, family bonds. It delves into Hong Kong's urban human landscape pre/post-1997 handover, blending suspense with warmth.

The relationship between characters with misplaced time and space helps solve cases spanning 25 years. Police suspense and warmth coexist. Through a series of cases caused by a building fire in 1990, it tells the story of the Hong Kong police's pursuit of justice and family affection, and shows the changes of Hong Kong's urban human style before and after the return of Hong Kong.