A crippled woman takes pleasure in tormenting her son, blaming him for her condition. Years later, the son returns home with his wife and newborn only to find himself still under her influence and twisted from her prolonged mental abuse.
Young David Masters drowns his mothers cat Sheba in its milk, claiming she loves it more than he, one of many such Shebas he has killed. As a grown man, he returns home with his wife Janie and their newborn child. His mother swears vengeance on him, promising to toy with him as Sheba would have played with a mouse. Soon after, his mothers latest Sheba suffocates the baby under a pillow. Janie has a nervous breakdown. And then his mother brings in a French nurse to seduce David away from Janie.
