In 1990s China, a dock worker's murder sparks a major manhunt for a crime boss known as the Wise One. Detective Yan Gao leads the covert operation, enlisting port guard Ye for nighttime surveillance. As Ye juggles secrecy, a strained romance, and rising tensions, the lines between duty and personal life begin to blur.
Writer Gao moves into a new apartment neighboring rude Zhang and his wife. The Zhangs have already forced four neighbor families to leave for different disputes. Now they are clashing with cadre Liu because of a dog issue.