Air Force Colonel Kenneth Penmark and his wife, Christine, adore their daughter Rhoda, despite her secret tendency for selfishness. Christine keeps her knowledge of her daughter's darker side to herself, but when a schoolmate of Rhoda's dies mysteriously, her self-deception unravels.

Several years after the murderous events of the first movie left her father dead, Emma is now living with her aunt Angela and navigating high school. Angela’s husband begins to suspect that Emma may not be as innocent as she appears and suggests sending her off to boarding school. Meanwhile, a new girl at school seems to know Emma’s secrets, leaving Emma no choice but to slip back to her old ways and take care of her enemies by any means necessary.