Overdose plot
Sara, head of the Toulouse Police Narcotics Brigade, investigates a go-fast between Spain and France that her former lover, Raynal, has infiltrated. She soon discovers that her case is linked to the murder of two teenagers in a Paris hospital, which is overseen by Richard, the head of the local investigation. Forced to work together to find the killer and put an end to the go-fast, Sara and Richard find themselves in a breathtaking race against time on the roads of Spain and France as their attraction to each other grows.