ATF Special Agent Allison Jacob leads a task force that has trailed meth from the Mexican border to Wisconsin. Teamed with the Milwaukee Police Special Crimes Unit, she fights a daily battle with drugs, sex crimes, and murders, but her investigation has hit a wall—on the streets and within her organization. In the worst blizzard of the year, the latest victim unexpectedly shows up at AJ's office. Bright and attractive, small business owner Katie Blackburn angrily relates her experience during the interview when, unknowingly, Katie gives AJ the break she's desperately needed. Immediately, Katie presents another kind of battle for AJ. Just as she took the oath to keep America safe, AJ's heart begins to feel the same oath for Katie. AJ knows drugs don't care who handles them, but she does. It's her job and her war.