After completing his military training, young Léo, a taciturn soldier with family problems and secret addictions, is assigned to one of the units that patrol the streets of Paris in search of possible terrorist threats as part of Opération Sentinelle.
Jérémie, 34, wakes up in an apartment he doesn't know, next to a woman he doesn't know. She is Adna, a stunning Swedish woman who is as funny as she is sweet. Is this the beginning of a fairy tale? Not quite, since Jérémie is about to get married—to Antoine.