Brother Marie-Victorin becomes friends with his student Marcelle Gauvreau. Both came close to death and share the same love of God and nature. Later, she became his collaborator. In an epistolary exchange which lasted until the death of Marie-Victorin, they explored human desires and ?biology without veil?. This great chaste love, the love of Quebec flora pushes Antoine and Roxane, who play them on screen, to question their own relationship with love and Nature.