Haunted by his past, veteran Sergeant Ko Fai is assigned to a new precinct, where he teams up with the sharp and determined Sergeant Fong Chi Kiu. As they tackle tough cases, a quiet bond forms between them. But Chi Kiu’s dedication to work strains her relationship with her troubled teenage son. Meanwhile, Lo Sin Man, a former gang associate, raises her daughter Siu Po with Ko Fai’s support. Now a fame-seeking influencer, Siu Po dives into the drug underworld, putting herself at risk. With danger closing in, Ko Fai and Chi Kiu must fight to protect those they care about and bring justice to the streets.