A small provincial town. Here live two brothers, Horace and Gabriel, marked on their faces and bodies by a rare neurocutaneous disease. Horace is a creepy and gloomy butcher, Gabriel a shy and fragile clerk. Those marks on their faces provoke opposite reactions in the two, making their relationship with others complex and difficult. It will be the arrival of Arianna, Gabriele's new colleague, that will break that toxic and symbiotic bond between the brothers, revealing the destructive charge that will endanger everyone lives.