When a young woman goes missing, Lieutenant Christian Janvier is convinced the disappearance is linked to the unsolved cases of six other missing girls who have vanished without a trace over the course of the past fifteen years.

A search of Guerrand's property proves inconclusive, but Janvier is convinced that the reclusive taxi driver knows more than he is letting on.

A series of mistakes made Janvier threaten the case and unwittingly put his prime suspect in danger.

Disparaged by the recent grim turn of events, Janvier is persuaded to take a holiday by his daughter in an effort to forget about the case. But suddenly a clue reveals itself, a clue that could hold the key to solving the entire case.

Janvier visits the mother of the newly discovered victim, a young musician named Emily, and suddenly realizes the connection that has gone unnoticed for so long. As Janvier is getting closer to the truth, another girl goes missing - a girl who eerily resembles his own daughter.

A relieved Janvier finds his own daughter, Caroline, with her boyfriend. However, he soon discovers that the girl now missing is Caroline's best friend, Clara.