Twenty-four-year-old Hailey Cain has dropped out of the US Military Academy for reasons she won't reveal. She has had to leave Los Angeles and it would be too big a risk for her to return. Now working as a bike messenger in San Francisco, Hailey keeps a low profile, until her high school best friend Serena Delgadillo makes a call that will turn her whole life upside-down. Serena is the head of an all-female gang on the rough streets of LA. She wants Hailey to escort the cousin of a recently murdered gang member across the border to Mexico. It's a mission that will nearly cost Hailey her life, causing her to choose more than once between loyalty and lawlessness, and forcing her to confront two very big secrets in her...