the story takes place in hong kong in the 1930s, with corrupt officials rampant and trafficking cases frequently eee。 one day, liang xin (played by yang yi) went to the police station to report the case and met a miscellaneous misunderstanding called jinhua (played by zhang jicong). liang xin knew the unhealthy trends and evil spirits in the police station, so he naturally did not entrust the hope of solving the case to jinhua. later, liang xin met the policeman chen yiran (played by yang ming). unlike other detectives, chen yiran was young, promising, upright and brave. with his help, the traffickers eventually fell into the french open. there was a sincere relationship between liang xin and chen yiran, but liang xin had a special identity and knew that she could not get together with chen yiran, so she chose to bury this relationship in her heart. jinhua, who had already fallen in love with liang xin, saw all this. in order to fulfill the one he loved, he reluctantly stepped forward to mediate and finally successfully matched liang xin and chen yiran together.