Set in the vibrant and decadent 1980s red-light district of Taipei's Linsen North Road, 'Light the Night' revolves around the lives, loves, and betrayals of the madams and hostesses working at 'Hikari', a popular Japanese-style nightclub. Co-owned by close friends Rose Luo and Sue Chu, the lounge serves as a haven for wealthy businessmen, gangsters, and lonely souls looking for escape. However, the glittering facade shatters when an unidentified female corpse is discovered in the nearby mountains, plunging the women of Hikari and the detectives investigating the case into a dark labyrinth of suspicion, hidden motives, and interconnected secrets where everyone is a suspect. As the mystery unfolds across three distinct chapters, the series delves deep into the complex backstories of the characters, exposing how past traumas, unrequited love, jealousy, and dangerous liaisons led to the tragic murder. Detective Chiang Po-hsiang leads the meticulous investigation, navigating through shifting alibis, blackmail, and police corruption. Meanwhile, Rose and her colleagues must confront their own demons and fragile trusts, realizing that the people closest to them might be the ones hiding the darkest truths.