Chen Mo worked undercover in a drug cartel for ten years and returned after destroying the organization. However, his boss Zhao Zhiming denied his existence, saying that Operation Nightingale had never been registered. He was regarded as a delusional patient and almost sent to a mental hospital. With the help of reporter Su Qing and mysterious helpers, he gradually uncovered a deeper corruption network inside. Someone sold undercover information to drug dealers, and the first six "Nightingales" have all been killed. At the hearing, Chen Mo revealed the truth in public and restored his identity. The corruption is far from cleared, but this time, he's no longer alone. Justice may be late, but it will not be absent.
