Bang is the story of a brother, a sister and a gun. Loner Sam's life is transformed when he comes into possession of a gun and starts to break the law. His ambitious policewoman sister Gina is paid to uphold it and makes it her mission to find the owner of the weapon. The family saga plays out against an inquiry into the shooting of a local businessman that raises questions for Sam and Gina about their father's murder when they were young children.
The Package Ep. 1
While investigating a robbery, ambitious police officer Gina Jenkins stumbles upon a major crime scene, while her brother receives a dangerous item to look after.
Gunshots Ep. 2
Sam stashes the gun away, and the police question suspects for the murder of local car salesman Stevie Rose, but his widow, Patricia, makes a surprising announcement.
Loss Ep. 3
Reeling from the death of his grandmother, Sam lashes out. Police respond to an incident at Patricia's home, while Sam's stealing at work gets him into trouble.
Shot Ep. 4
Sam's former coworker convinces him to do another robbery, but things go awry when Sam decides to target his stepfathe's business.
The Truth Ep. 5
During questioning, Sam reveals that he knows compromising information about Gina's boss. Patricia prompts Gina to reexamine her father's murder, and Sam makes a friend.
Ashamed Ep. 6
Sam and Ela flee the robbery at the club, with Luke in hot pursuit. Gina later questions the pair about the robbery, but they mislead her and continue their crime spree.
Suspicions Ep. 7
When a woman's body is found in the woods, the police find a connection to Stevie. Sam leaves his grandmother's house, but his family grows suspicious of his actions.
Out Ep. 1
When Gina discovers a body on the beach, the victim’s boyfriend accuses a local businessman. Gina is distracted from the investigation by Sam’s return home from prison
The Club Ep. 2
With the discovery of another body, the police connect the victims to a rugby club whose members were accused of rape years ago. Sam gets closer to his new boss, Dai.
Gunshot Ep. 3
Dai is rattled when his bike shop is broken into, but he won’t tell Sam what’s wrong. Gina and Luke investigate reports of a gunshot heard near one of Jeff’s businesses
Somewhere to Hide Ep. 4
After his argument with Gina, Sam stays with his mother but still gets caught up in the feud between his caseworker, Caryn, and her husband, DI Morgan Riley—Gina’s boss.
Regrets Ep. 5
Knowing he could be the next victim, Jeff’s son, Richie, offers to let the police use him as bait to draw out the murderer. Sam discovers something shocking about Caryn.