In the past few days Rome has been the scene of a singular event: when it rains, the manholes exhale a dense steam whose origin and composition is unknown. No one can imagine that whoever breathes in the mysterious substance will have to deal with what he/she represses, their darkest instincts, their anger. Not even the Morel family.
It's one of the many anonymous nights of quarantine when Irene's phone rings. It's Pietro, her ex. Irene hasn't heard him for months, since their story ended, she hesitates, but in the end she answers. Pietro is beside himself and his confused words suggest a desperate act. Irene just has to travel, to a ghostly city, without ever hanging up, with the hope of reaching him in time.
Sergio Rossetti, a physical education teacher, is transferred to Remis, a small mountain village in which an unbreakable serenity reigns. He discovers that behind that golden equilibrium lies a disturbing ritual. One night a week the inhabitants of Remis are freed of their pain thanks to a teenager, Matteo Corbin: just hugging him is enough to feel better. In an attempt to save Matteo from the madness of his community, Sergio will unleash the dark side of what everyone calls the angel of Remis.
On his deathbed, Ludovico entrusts his daughter Margot to the housekeeper, Felicia, asking that the family villa be transformed into an orphanage so that the little girl can grow up in joy with other children. But the wicked Felicia only wants the little girl's assets and not take care of her. With the complicity of her suitor, Max, she exploits the orphaned children and keeps Margot segregated and neglected to the point that the child withdraws into herself and no longer speaks. One night, however, Margot manages to escape and, after overcoming the darkness of the woods, she comes across a circus.