No Room for Crime Episode 3 English Sub

After the death of his role model, the Sergeant Shu Ge, during a robbery in 2019, his subordinate Ah Xu An is impacted but insists on being a competent police officer. This is why, five years later, he joins the team of the anti-mafia inspector Peng Yin Qi. Their purpose is to fight against drugs trafficking and maintain social tranquility and justice. Meanwhile, his former teammate Ah Can, who lost his fighting spirit, is transferred to an investigation team. While, his other former partner Ah Xi An leaves the police forces to join a gang. One day, he crosses paths with Chen Zu Yao, one of the gangsters involved in the Zhu Bao robbery five years ago... How can Ah Xu An take revenge on the gangsters involved in the death of his mentor? (Source: Chinese = TVB || Translation = MyDramaList)