Banter is a gun for hire. After she does a hit in a park, she meets a good looking detective, Corey Van Baine, who is investigating the case. But he's married. When Banter learns his marriage is on the rocks and his wife has left him, she becomes his unlikely therapist to help him overcome the devastation. However, Banter finds herself falling in love with him and suspects Corey is falling for her. A love affair enfolds via cellphones and brief glimpses as they do their jobs. Him, always one step behind her, trying to find out who she is, and she, leading him on... Until they find themselves working together on a mass murder case...and the bullets start flying.