Gabriele carries a burden he does not want to reveal. Sergio is looking for somebody to share his pain. They meet on the edge of what seems to be the end of the world.

Forty-year-old Marco, married to the daughter of the owner of the advertising agency where he works, loses everything overnight because of a whim: having a romantic encounter with Lia, who lures men online to make ends meet, getting them to pay for her expenses and then running away immediately afterwards. Marco feels something for her that goes beyond sex; perhaps he is in love with her. When he asks a nerdy friend for a place to stay, he realises he has a rare gift: he knows how to use words. So he turns it into a lucrative business, becoming a modern Cyrano for lonely people looking for companionship, sex, love, and humanity, searching for someone to connect with. But Lia is still on his mind, and one day he meets her again...

Based on the novel "Il quaderno nero dell'amore" of Marilù Manzini, published by Rizzoli, through a diary written in a notebook, it tells the most intimate sexual secrets of three young people in search of their identity.