My name is Virginie. Today, of Nina, Adrien and Etienne, only Adrien still speaks to me. Nina despises me. As for Etienne, it is I who no longer want him. Yet they have fascinated me since childhood. I only got attached to these three. 1986. Adrien, Etienne and Nina meet in CM2. Very quickly, they become united and a promise unites them: to leave their province to live in Paris and never to separate. 2017. A car is discovered at the bottom of a lake in the hamlet where they grew up. Virginie, journalist with an enigmatic past, covers the event. Little by little, she unveils the extraordinary bonds that unite these three childhood friends. What have they become? What does this wreck have to do with their friendship story?