The story concerns a ten-year-old boy named Conradin, who lives with his strict cousin and guardian, Mrs. De Ropp. Conradin rebels against her and invents a new religion for himself, which centres on idolising a polecat-ferret he calls Sredni Vashtar; a vengeful, merciless god. Conradin keeps the ferret hidden in a cage in the garden shed, and worships the idol in secret. The story comes to a climax when his cousin sets out to discover his god.
Conradin, an abnormal a sickly ten year old boy who lives with his cousin and guardian, Mrs. De Ropp, secretly takes care of a polecat-ferret whom he calls Sredni Vashtar. He invents a religion of his own with Sredni Vashtar as the god, a merciless and vengeful god. Mrs. De Ropp notices that Conradin has been visiting the shed in the garden (where the ferret and a Houdan hen live) and announces to Conradin that the hen was sold and taken during the night. Distressed, Conradin begs his god to do something for him. His cousin notices that Condradin's visits to the shed do not cease and decides to clear out whatever Conradin is keeping in the shed. Conradin is ordered to stay in the house, but he defiantly calls out a hymn: "Sredni Vashtar went forth, his thoughts were red thoughts and his teeth were white. His enemies called for peace, but he brought them death. Sredni Vashtar the Beautiful." Later, he sees a great ferret with dark wet stains around its mouth emerge out of the shed and prowl out of the garden. While people screamed outside, Conradin makes himself a piece of toast.
Conradin, an abnormal a sickly ten year old boy who lives with his cousin and guardian, Mrs. De Ropp, secretly takes care of a polecat-ferret whom he calls Sredni Vashtar. He invents a religion of his own with Sredni Vashtar as the