Under the shadow of the bustling city, seemingly unrelated and bizarre murders occur one after another. Criminal investigation genius Lin Shen was forced to leave the police force due to an unsolved case three years ago. However, after a new murder case emerged, he was pulled back into the investigation whirlpool by his former partner Su Qing. Behind the case, the mysterious organization "Nightingales" looms. They seem to control everything, taking advantage of human weaknesses to weave a web of evil. In the process of tracing the truth, Lin Shen and Su Qing not only have to face the cunning murderer, but also uncover the secrets hidden in themselves. As the investigation deepens, a shocking conspiracy that can subvert the entire city is slowly emerging...
