L'Alpagueur is a free-lance spy from the French secret agency. He's put on the investigation about L'epervier, a serial-killer who employs young boys to help him robbing banks before killing them.

After his father is killed in a plane crash, Bart Cordell returns back home to France to claim his inheritance: to lead the industrial empire his father built. But when a prostitute tries to set him up for a drug smuggling charge, he is forced to accept that his father may have been assassinated and that the killers are out to get him as well...