Karate master Mr. Miyagi (Noriyuki "Pat" Morita) goes to Boston to attend a military reunion. There, he visits with Louisa (Constance Towers), the widow of his former commander, and meets her granddaughter, Julie (Hilary Swank). Julie's parents were recently killed in a car accident, and she is still reeling from the loss. When Julie surprises Miyagi with her knowledge of karate, he takes her to a Buddhist monastery for training and to help her come to terms with her angst.