Mathilde has always been a headstrong woman. A member of the French resistance when she was just eighteen years old, she both impressed and horrified everyone with her cool capacity for violence. Now it is 1985 and Mathilde is in her sixties.

She is not as glamorous as she once was, but she continues to take great pride in all that she does. Recently, however, the sixty-three-year-old has been affected by loss of memory and erratic changes in mood that even her exasperated dog Ludo has noticed. This is a potentially dangerous situation, since Mathilde now makes her living as a contract killer...