Nudes croise les parcours de Victor, Sofia, et Ada, trois adolescents évoluant dans des univers très différents : entre un étudiant en médecine inconscient des risques qu’il fait encourir à sa camarade de faculté, une lycéenne tiraillée par le déterminisme social, et une collégienne de zone rurale désertée et victime de la pédo-criminalité sur internet, la série brosse les portraits de trois jeunes adultes confrontés à la problématique du cyberharcèlement.

Vincent is 13 years old and has a boundless admiration for his father. His father is unemployed and is mainly involved in football, pretending to become a professional trainer soon, and does not take care of his family. Vincent's mother manages everything, until one day, at the end of her tether, she attempts suicide.

Camille a 16 years old pregnant girl was placed in a maternal center by the Judge. She became friends with Alison, an immature young mother, and fought against the authority of Nadine, an educator as passionate as she was disillusioned.

Héloïse has nowhere to go. She meets Mallorie, who offers to let her stay in the flat she shares with two other young women. Héloïse finds a new home and a new family there. But their past wounds threaten the fragile balance between these women who appear so strong on the surface.