A complex love triangle unfolds when bisexual Anna meets Malik while in a relationship with Matheo. Exploring sexuality, loyalty, and the journey to find one's path through life's experiences, friendships, and love.
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.