Pregnancy is difficult – especially if yours is the focal point of an occult ritual. Rosemary's Baby follows the trials of Rosemary Woodhouse (Mia Farrow), a young wife whose desire to start a family goes horribly wrong. Her husband Guy (John Cassavetes) joins an occult group, using his wife's uterus as a bargaining chip in a deal to advance his acting career. Guy and Rosemary move into a new apartment building inhabited primarily with elderly people. Shortly afterward, strange things begin happening. A young woman who had been living with the Woodhouse's neighbors leaps to her death. Rosemary hears chanting late at night. As Guy makes a name for himself on stage and screen, Rosemary's pregnancy drains her physically, leaving her frail and in excruciating pain. Despite the reassurances of her doctor, Rosemary grows uneasy about her pregnancy and is suspicious of her husband and neighbors' activities.