'The Grudge' is the curse of one who dies in the grip of a powerful rage. Karen (Sarah Michelle Gellar) is an exchange student working for a Japanese medical centre. Covering for another nurse she attends to an old American woman, Emma, and while there unknowingly uncovers the source of the curse. Each time the curse finds a new victim, it is reborn. Karen must somehow escape the fits of rage and madness to avoid certain death.