Théo e Hugo sono due ragazzi parigini gay che s'incontrano in un cruising club e all'interno del quale hanno un rapporto sessuale. Usciti dal locale, i due realizzeranno che, travolti dal desiderio, si sono dimenticati di utilizzare il preservativo: questo fatto sconvolgerà la vita dei protagonisti in quanto Hugo è sieropositivo a carica non rilevabile e Théo rischia di contrarre l'HIV. Da qui inizierà un'odissea nella Parigi notturna. Il film inizia alle 4:27, quando i protagonisti sono nel cruising club e finisce alle 6:00.
Sebastian explores his sexuality and seeks for sex/love online. He meets Jacob, older and more experienced, who takes him to a sex club. In the new and frightening surroundings Sebastian has his first sexual experience and in their subsequent meetings love sprouts, at least for Sebastian. Outside the darkness of intense togetherness, the reality penetrates.
Veronica, recently divorced with a son, begins to organize her life and adapt to the new situation. Her problems are soon relegated to the back ground when Carlos, her masseuse, is murdered. Knowing himself in danger, Carlos left a final message on her answering machine: she had to retrieve a package hidden in a railway station toilet. From that moment, Veronica will not know peace.
In the back room of a gay club in Barcelona, the camera stalks the men (privy to their inner thoughts in voice overs), who stalk each other on a typically busy Saturday night.
Javi comes to a sauna club looking for a job. But soon he'll find out a place full of secrets, the biggest of them being a strange man who will fall in love with him: the Phantom of the Sauna.
A stripper from Club Chez Nous is murdered. The killer contacts a newspaper to whitewash himself. Two journalists start to investigate the case and stumble on other crimes along the way.
A newly wed couple, Romeo and Julia on their honeymoon on the French Riviera. By accident they meet three ruthless men in a Pontiac who drug them and assault the woman.
Kôichi is a Japanese man living alone in Berlin. He has no job and hardly any friends. One night Kôichi meets Ryota at a bar which is also a sex club. Ryota came to Berlin to visit a German guy whom he had "met" on a dating app. His high hopes for romance (and marriage?) were quickly crushed since the German was only interested in sex, not even letting Ryota stay for the night. That is why Ryota ended up spending the night in the dark room of the sex club. Kôichi for some reason lets Ryota stay at his apartment. They have sex. Ryota goes out almost everyday to get laid by various local men and comes home to Kôichi's. Increasingly caught up with a strange feeling that is akin to but not quite frustration or curiosity (needless to say, it is not even close to love), Kôichi gradually gives himself up to sex with Ryota.