《Portland Street Operation》 revolves around Leung Chi-keung after his release from prison.Twenty years ago, he was imprisoned for his brother's crime; twenty years later, he was faced with changes in power, broken relationships, and unresolved old scores.

Liang Zhiqiang originally wanted to live a peaceful life in a flower shop, but the entanglements between gangs and police investigations into related cases made it impossible for him to stay away.The series advances the fate of the characters between old friendships, family ties and real choices.