Natalie Jones, the first female Navy Intelligence Officer embedded in an active SEAL team, returns to her home town of Cooperstown, New York, after being seriously injured on a mission in the Persian Gulf. Depressed about losing her career and addicted to pain killers, she grudgingly accepts the job as local sheriff. As the boredom and triviality of the job causes her mental health to worsen, she agrees, against her better judgement, to join the Big Sister program where she meets a troubled fifteen year old. As she comes to care deeply about her "little sister," Natalie begins to care about her own life again. After the girl is kidnapped, beaten, and abused by a gang of drug dealers, and dies of a heroin overdose, Natalie vows revenge. She assembles the remaining members of her old SEAL team and plans a new mission - to take out the gang by any means necessary. As Natalie and her team go to war, she learns to overcome her addiction and her physical handicap, while finding romance with a mysterious member of a secret governmental agency who has been watching, and on occasion, helping, from the shadows.