Anna and Matheo's relationship is all but perfect when she meets Malik. Anna is confused about her sexuality and Malik's commitment issues are harboured by loyalty. La théorie du y is about how they find their way to live life through experiences, friendship and love.

Caroline Taillet, Gaspard Rozenwajn, Léone François-Janssens, Violette de Leu de Cecil, Salim Talbi, Ophélie Honoré, Colin Javaux, Nancy Nkusi, Dirk Van Vaerenbergh, Andrea Romano