Filthy is the coming-of-age story of the seventeen year-old Lena. In love with a boy for the first time, Lena longs for freedom and adventure. Her world is shattered instantly during one day. Instead of sharing her trauma, Lena remains silent, keeping it a secret even from her best friend. Her pent up feelings drive her to attempt suicide. With her family in shock, Lena ends up in a psychiatric ward. In the middle of wild and non-understood kids, she's discovering she is not alone in her experience.