From Paris in the 1960s to London in the first decade of the third millennium, Madeleine and her daughter Véra flit from one amorous adventure to the next, living for the moment and taking all the opportunities that life offers. But not every love affair is without its consequences, its upsets and its disappointments. As time goes by and gnaws away at one’s deepest feelings, love becomes a harder game to play.

In the wake of her mother's tragic death, French teenager Junie (Léa Seydoux) transfers to a different high school. Though Junie lives mostly inside her own head, her beauty and stoicism win her the attention of the entire male student population. Junie begins dating the gentle Otto Cleves (Grégoire Leprince-Ringuet), but finds herself intensely drawn to her youthful Italian language teacher, Nemours (Louis Garrel). When Nemours begins to reciprocate, serious complications ensue.

Ismael and Julie, who in the hope of sparking their stalled relationship, enter a playful yet emotionally laced threesome with Alice. When tragedy strikes, these young Parisians are forced to deal with the fragility of life and love. For Ismael, this means negotiating through the advances of Julie's sister and a young college student – one of which may offer him redemption.

Jacques is a writer living in Paris. He hasn't turned 40 but already mistrusts that the best in life is yet to come. Arthur is a student living in Brittany. He reads and smiles a lot and refuses to think that everything in life might not be possible. Jacques and Arthur will like each other. Just like in a lovely dream. Just like in a sad story.

A girl is approached by a strange boy outside her high school. He asks her to follow him to hear stories where gods fall in love with human beings.