Rose Pamphyle lives with her widowed father and is destined to marry a son of the local mechanic. When she travels out of town and applies for a secretarial job with an insurance agency run by Louis Échard, he learns that Rose can type with extraordinary speed - using only two fingers. He tells her to compete in a speed-typing competition if she wants the job.

A pedophile network, to which belong notables of a French provincial town is about to be discovered by a young woman who herself lost her son, a child survivor of one of these horror festivals, and an anarchist gunsmith.