Inspector Richard Kemp never got around to putting the handcuffs around the Eardrum Slasher, a dangerous serial killer whose rampage began 20 years before. When Hélène, a psychologist, witnesses the Slasher’s latest crime and offers to testify, Kemp falls in love with her at first sight. In a mysterious turn of event, Kemp is suddenly transported back in time to the site of the Eardrum Slasher’s first murder, he realizes that this could provide a second chance to catch the killer...

The Bouvier-Sauvages, a large aristocratic family, meet the much more modest Martin family when their children's wedding is announced. For the occasion, the future bride and groom offer their parents DNA tests, which will reveal their true origins. The results are totally unexpected and will make the effect of a bomb.

1992, Eliott is an ambitious young pianist, son of a renowned conductor. Making electronic music without much faith in it, he will discover a way to satisfy his ambition.

Gaspar, an obsessive theatre director, sees his work threatening his relationship with Lola, who dreams of making a living from her music but is gradually giving up hope. Meanwhile, Victor, his childhood friend, who is involved in drug trafficking, is caught up in a disturbing series of murders.