When a mysterious corpse is found in a river, a distressed police officer delves into a string of grisly murders as danger quickly approaches.
Patrolman Loyan tries to find his place in the new police department while keeping his friend Warsame, newly released from prison, on the right track. Loyan's ambition is to get into detective training, but his supervisor Jokisalo thinks he'd be better off patrolling the familiar neighbourhoods with his partner Johanna. The patrol gets down to business when they start investigating what looks like a suicide. Antero Päiviö, a professional criminal and racial bigot involved in drug trafficking, has jumped from his balcony. The man who was first pronounced dead suddenly wakes up and is taken to hospital. Loyan finds it hard to believe the man's story and decides to find out the truth at any cost. As the plot unravels, it's hard to know who to trust anymore, when Warsame seems to be up to something behind Loyan's back.
Inspector Tai On-na (Jessica Hester Hsuan) has always been comfortable in the logistic position of file management. Because of fate, he will work with the Yuanzu-level Tuoqiang senior sister Chan Sam-yuan (Joyce Tang) and the male god of the Flying Tigers team Mung Hon-sam (Moses Chan) to solve the case. (Hui Shiu Hung) arranges to join the unsettled case team, and a group of police officers with their own "characteristics", under the leadership of Hon-sam, pursue unsettled cases that are not of concern to the outside world. Hon-sam was dissatisfied with On-na and fought each other until it was revealed that Anna was afraid of using a gun because of being hijacked, and the two sparked love! On-na meets again with Lau Tat-Wah (Him Law), a tuition student who was destroyed many years ago, but he has joined the underworld... Under the impetus of feelings and guilt, can On-na get back the pistol and re-energize her, and become a new generation of "armed lady cop" ?