Rat King | Creep Cast

A sick younger brother, perceived as a 'king' by his older sister, is sacrificed by their father to an ancient, moving 'flesh wall' entity residing in underground tunnels. This entity, rumored to be a result of a cult or nuclear incident, absorbs people for eternal existence. The father, part of a generational tradition of feeding the entity, chooses this 'eternal life' over death for his son, leading the sister to continue offerings of strawberries and a twig crown.

The brother's illness, the father's actions of delivering him to the entity, the description of the flesh wall composed of human parts, and the sister's continued ritualistic offerings.

Two siblings are regularly confined to a rotting shed by their cultist parents, who host masked, ritualistic dinners. The shed is a nexus for a mysterious entity. The younger sister, Naomi, returns from the shed seemingly changed, her hair braided by an unseen force. During a later ritual where Naomi is to be sacrificed, a giant crow-like entity, implied to be a protective deity, intervenes, saving Naomi and causing the cultists to flee.

The parents' masked dinners with incense and a sacrificial goat, the shed's eerie phenomena (echolocation-like tapping), Naomi's braided hair and altered voice, and the crow entity's appearance and intervention during the sacrifice.

The protagonist, named Leica after the tragic space dog, endures severe abuse from her father and body-hopping grandfather (Pavl), who uses blood magic for immortality. She discovers an ability to manifest beings from her dreams and trauma, including her beloved adopted brother Alexander and a spectral version of Leica the dog. The story culminates in a confrontation where the manifested Leica helps defeat Pavl, leading to the father's self-sacrifice and the protagonist abandoning her powers, choosing the simple, loving nature of a 'dog' over monstrous abilities.

The protagonist's name and the abuse she suffers, the grandfather's body-hopping and the father's complicity, Alexander's birth and the protagonist's care for him, the father's past sacrifice of his sister Alexandra, the manifestation of Leica the dog, and the final battle with Pavl and its aftermath.