The film explores the world of firefighters in 1920s New York City and tells the story of a 16-year-old girl who will have to become a hero in order to save her city.

If Paris is the city of lovers, it is also that … ex! Antoine does not dare to commit, Didier regrets his ex-wife, Father Laurent must celebrate the marriage of his ex, Julie, Serge is harassed by Lise, the ex of his girlfriend of the moment, while Greg consoles With the dog … of his ex! So many characters whose lives will be telescoped in a joyful disorder and who could fall back in love! But of whom? Whether they obsessed us or loved to hate them, deep down, it is difficult to forget their ex!

In the west of Paris, three strange murders are committed. Each time, the victim is eviscerated before being arranged in a macabre display. While discovering one of these, police commander Eric Lanester (Richard Berry) loses his sight. With the help of Gabrielle (Emma de Caunes), a young woman taxi driver, the cop nevertheless continues his investigation, which soon awakens demons he considered buried forever.