Dans un lycée privé d'Australie, Mike et toute sa classe son chargés d'un devoir sur Roméo et Juliette et il doit s'associer avec le nouvel élève, William. En travaillant ensemble, ils se voient de plus en plus souvent et s'éloignent du sujet en se consacrant au tournage amateur d'un Frankenstein. Une nuit, alors qu'ils sortent ensemble à une fête, Mike embrasse William et ils entament une relation qui sera très compliquée...
Adèle is an introverted 15-year-old high-school student whose classmates gossip constantly about boys. While crossing the street one day, she passes by a woman with short blue hair and is instantly attracted. She dates a boy at her school for a short while and they have sex, but she is ultimately dissatisfied and breaks off their relationship. After having vivid fantasies about the woman she saw on the street and having one of her female friends behave flirtatiously towards her, she becomes troubled about her sexual identity. One friend, the openly gay Valentin, seems to understand her confusion and takes her to a gay dance bar. After some time, Adèle leaves and walks into a lesbian bar, where she experiences assertive advances from some of the women. The blue haired woman is also there and intervenes, claiming Adèle is her cousin to those pursuing Adèle. The woman is Emma, a graduating art student. They become friends and begin to spend more time with each other. Adèle's friends suspect her of being a lesbian and ostracise her at school. Despite the backlash, she becomes very close to Emma. Their bond increases and before long, the two share a kiss at a picnic. They later have sex and begin a passionate relationship. Emma's artsy family is very welcoming to the couple, but Adèle tells her conservative, working-class parents that Emma is just a tutor for philosophy class.
Sixteen-year-old Russell is still going on dates with girls while having a secret relationship with football quarterback Kevin, who will do anything to prevent his football teammates from finding out. Min and Terese tell everyone that they're just really good friends. And then there's Ike, who can't figure out who he is or who he wants to be. Finding the truth too hard to hide, they all decide to form the Geography Club, thinking nobody else in their right mind would ever want to join. However, their secrets may soon be discovered and they could have to face the choice of revealing who they really are.
Charlie (Logan Lerman) is uneasy about beginning his freshman year of high school; he is shy and finds difficulty in making friends, but he connects with his English teacher, Mr. Anderson (Paul Rudd).
Mo (Fady Elsayed) and Rashid "Rash" (James Floyd) are teenage brothers of Egyptian descent living with their parents in Hackey. Elder brother Rash is fiercely protective of Mo, giving him a TV when he does well and encouraging him to stay in school. However Mo begins to want to emulate Rash who works as a low level drug dealer and is able to use money from his job to pay for small luxuries to make their lives more comfortable.
Laure is a 10-year-old child whose family moves to a new address in Paris. One day Laure sees a group of boys playing outside the window and goes to play with them, but they disappear quickly. Instead, Laure meets Lisa, a neighborhood girl, and Laure introduces himself as Mikäel. Lisa then introduces Mikäel to the rest of the neighborhood children stating that "he" is the new kid in the apartment complex. A bath scene in the film reveals that Mikäel has a vagina, and a following scene confirms that Mikäel was assigned female at birth as his mom addresses him and his sister as "girls." Mikäel becomes friends with Lisa and the boys and tries to hide his genitalia to appear like a boy (make it seem that he has a penis). At one point this leads Mikäel to pee his pants, which originally makes him embarrassed, but is soon forgotten. As they all play, Lisa and Mikäel develop crushes on each other and after swimming one day, Lisa kisses him. At this point, Mikäel also seems to be accepted into the group of boys.
The film starts off with a young Pim at a fair in which he holds his mother's, Yvette, hand. At the fair, young Pim meets Zoltan, a fairworker who would later rent a room in their house but leave early enough in Pim's life that he has little memory of him. The film then jumps some years into the future.
The story is told by Sebastián (Carlos Echevarría), the sports coach who becomes the object of a student's affection. Martin (Javier De Pietro) is a 16-year-old young student who is attracted to his coach, Sebastián. Sebastián tries to keep Martin at a distance, but at the same time tries to be kind and nurturing. Martin goes to great lengths in his attempt to get close to his teacher. When Martin hurts his eye during his swimming class, Sebastián initially takes him to the hospital. After treatment, Sebastián offers Martin a ride home. However, Martin was supposed to spend the night at a friend's house, so no one is expecting him to come home that night. Martin spends the night at the Sebastián's house. Things come to a head when Sebastián realizes that he was being lied to and punches Martin in the face. He is not angry from disgust for being the object of Martin's desire, rather because Martin's dishonesty could potentially cost the coach his job. Offended, Martin taunts Sebastián, telling him to call the police and suggesting it would cause greater problems for Sebastián. Later, Martin accidentally falls off a roof after retrieving a neighbor's soccer ball, and Sebastián finds himself filled with remorse.
Cherie Currie (Dakota Fanning) is a teenager in Los Angeles, California who desperately wants to be a rock star. She idolizes David Bowie and cuts her hair and dons make-up so she will resemble Bowie's character Aladdin Sane. At her high school talent show, she lip syncs to "Lady Grinning Soul" and, despite some hecklers in the audience, wins.
Gabriel, adolescent dégingandé islandais de seize ans, effectue un séjour linguistique de trois semaines à Manchester, où il rencontre Markus, adolescent islandais comme lui. Ce dernier est blond et masculin et semble très intéressé par les filles. Il se destine à devenir coiffeur à la rentrée. Après une nuit arrosée, ils s'embrassent et cela donne à Gabriel la chair de poule. Revenu à Reykjavik, Gabriel l'évite et préfère rester avec sa bande d'amis à sortir et à s'amuser et aussi à trop boire. Il est le confident de Stella dont il ne s'aperçoit pas qu'elle est amoureuse de lui et il est aussi ami avec Gréta à la recherche de son père qui ne l'a pas reconnue. Il conseille son copain Teddi - au caractère viril et séducteur - dans ses amours et sa relation avec Tara. Tous ces adolescents sont plus ou moins surveillés par leurs parents qui sont eux-mêmes en difficulté avec leur propre existence. Un drame va souder la petite bande d'amis et faire accepter à Gabriel sa nature intime.
Âgé de seize ans, Jonas se trouve face à un nouvel échec scolaire et pour s'en sortir, il décide de tout miser sur le tennis. Mais là encore, alors qu'il se trouve aux portes de la sélection nationale, il échoue. Pierre, un trentenaire mystérieux, est touché par sa situation et choisit de le prendre en charge. Cependant, il est incapable de fixer les limites de cette relation et l'éducation finit par dépasser le cadre scolaire...
Ian Lafferty (Josh Zuckerman) is an 18-year-old recent high school graduate. He searches for a girl online making it seem as if he is attractive and strong, although he's sweet and unassuming. He soon meets "Ms. Tasty" (Katrina Bowden) and agrees to meet her in person. She lives in Knoxville, Tennessee, while he lives in Chicago, Illinois. With his best friends Lance Nesbitt (Clark Duke) and Felicia Alpine (Amanda Crew), he goes to Knoxville in a 1969 Pontiac GTO Judge borrowed without permission from Ian's arrogant homophobic older brother Rex (James Marsden).
Timothy (Tanner Cohen) is an openly gay student at a private boy's school. Although now in his senior year, he is still persecuted by the aggressive rugby team, on whose captain, Jonathon (Nathaniel David Becker), he has a crush. Timothy lives with his mother, Donna (Judy McLane), who is struggling with her son's sexuality and with getting a job, and his father who is not a part of his life.
James (Niall Wright) is a withdrawn and secretive teenager, coming from a family with long-buried secrets. With no friends and a refusal to confide with his parents (Margaret Goodman and Gerry Doherty), he faces an inner battle as he comes to terms with his sexuality. His literature teacher, Mr. Sutherland (Matt Jennings), is his sole beacon of hope, believing that he may understand the trouble he faces. However, in his moment of need, Sutherland, concerned by the risks involved, fails to provide James with the support he needs. Devoid of hope, he makes an audacious decision to turn to seemingly the last person who can help, an old man (Louis Rolston) that he meets in the public toilets.
Fifteen-year-old Nathan Davies (Stephan Bender) moves to St. Francisville, Louisiana, a small Southern town with his parents (Thomas Jay Ryan and Diana Scarwid) and starts to befriend the older boy next door, Roy (Maximillian Roeg), fellow high school student and bus driver, who is in a relationship with Evelyn (Rooney Mara). Nathan and Roy start to develop their relationship by helping each other with school work at Nathan's house. While Roy is teaching Nathan how to solve an Algebra problem, Nathan touches his hand. Roy pulls away at first, but then takes hold of Nathan's hand.