I'm not quite sure whether this is gonna get any more explicit, there is nothing out there in the reviews that states so. Unless of course like Padawer said, there will be a director's cut, which I have heard nothing so far...
Diane Rouxel & Eva Menis-Mercier & Angie Sherbourne & Niseema Theillaud - The Smell of Us (2014)
Eva Menis-Mercier sitting in a guy's lap in the middle of a party as she removes her bra to reveal her breasts and then lying on her back smoking a joint as he removes her panties to reveal her bush and then goes down on her for a while until finally he climbs on top and has sex with her all as another guy sits behind them smelling them and several people in the room record them with their cell phone cameras giving us blurry and glitchy looks at them having sex.
Niseema Theillaud, the mother of actress Marion Cotillard, fully nude as she walks out of a bathroom and then talks with a guy while doing some before sitting down next to him on the bed and cuddling with him.
Angie Sherbourne topless showing her breasts as she and a guy shove a sleeping guy off of a couch and then removing her panties to reveal her fully nude body before she has sex with the guy while on her back and then harder while on all fours with him behind her all as some of the footage is shot by various people in the room using their poor quality cell phone cameras.
Diane Rouxel sitting on a couch as she strips off her shirt to reveal her breasts and then getting up and dancing with a guy as they remove each other's clothing to reveal their fully nude bodies and then continue dancing all around another guy who is playing video games as they tease him giving us a long look at Diane's ass and bush before finally the guy picks her up and carries her into another room.
Diane Rouxel in the 69 position as she's lying naked on top of a guy while they go down on each other before having sex with him while on her side with him behind her giving us some good looks at her breasts as well as at her bush as it pops in and out of frame at the bottom of the screen.