Inspector Arjona, appointed by General Intelligence
to infiltrate a group of delinquents, is forced to write reports
secrets to his supervisory minister.

But two inopportune elements disrupt the writing of his
writings: the abuse of hashish to which his bad habits force him
acquaintances, and the overwhelming presence, in the observed group,
of a young person named Dulcinea.

And we will see, insidiously, the implacable and martial tone of the
first reports soften, waver, become more friendly and disordered,
until he completely turns around. And our inflexible agent of
RG, to be won over, insidiously, to the delinquent cause, and more
still to the love cause.

This ironic metamorphosis gives Lydie Salvayre the opportunity
to castigate with cheerful ferocity the supporters of a reinforced Order
against those who, in a small way, threaten him. This is the opportunity
also for her to write, because she has a heart, a love story
silent and nocturnal.