本剧是学警系列的第三部曲，学警经训练及在机动部队工作後，将参与警队的实际工作。让观众一起经历警员们的成长过程，由受训到成为一名维持社会治安的警员，当中经历多少辛酸、挣扎及矛盾，为观众一一道来。
Sammul Chan
Lee Pak-Kiu
Ron Ng Cheuk-Hai
Chung Lap-Man
Michael Miu Kiu-Wai
Kong Sai-Hau
Kathy Chow Hoi-Mei
Ching Yeuk-Sam
Michael Tse Tin-Wah
Leung Siu-Tong
Elanne Kwong Yeuk-Lam
Kong Yau-yau
Leung Ka-ki
Fa Yeuk-Bo
Dominic Lam Ka-Wah
Wu Cheuk-Yan
Joel Chan
Fai Wing-Lun
Dexter Yeung Tin-King
"Chicken" (Lat Gai)/Chu Wing-Fuk
Angelina Lo Yuen-Yan
Ma Ying-Oi
Lam Lei
To Yik-Tin
Jason Pai Piao
Dickson Lee Kar-Sing
