A young and fiercely independent woman, Carmen, is forced to flee her home in the Mexican desert following the brutal murder of her mother. She survives an illegal border crossing into the US, only to be confronted by a lawless volunteer border guard. When the border guard and his patrol partner Aidan become embroiled in a deadly standoff, the pair is forced to escape together.

Anna travels to Paris following John, unintentionally causing tension between her best friend Jean and his partner Philippe.