Girls can't swim

Lise, a young teenager who dreams of going to the seaside, is in the midst of family mourning. Her only escape is the correspondence she maintains with Gwen, her best friend. Gwen lives in Brittany with a family of fishermen in the midst of a crisis. As their correspondence continues, the two girls realize they have nothing left to say to each other. The breakup is all the more violent because their attachment was so strong.