Imagine if Dirty Harry had a daughter. B-4 - Big Boobs Bonnie Brown was born to be a special agent. Her father, a notorious San Francisco cop, and her rural Nevada mother, a hardened bar owner, with the mouth of a truck driver and fists poised to loosen teeth.
In her youth she was given the B-4 moniker by the Battle Mountain Boys while shooting a video. Her mother tried to make her a "Hollywood Star" but she chose the college route instead hoping to become a detective like her father. Against all the odds, she rises to the top of her class as an Alcohol, Tobacco, Firearms and Explosives (ATF) Special Agent.
At a pistol range, she meets Scott Johnnson--a pilot. He is a Special Agent wannabe who introduces B-4 to his oversized revolver, Johnnson, named after his Special Agent father. A friendship forms and he gives her Johnnson for safekeeping. While at Top Gun school, he visits B-4 on his day off. They are trailed by people suspected to be after Scott's father. B-4 awakes after a grenade explosion discovering Scott has disappeared.
B-4 vows to find the men responsible while working a major case involving a Nevada casino owner, who is really a major crime boss. Her efforts place her and her family in his cross-hairs.