Mary works as a nurse in a hospital where she is respected by doctors as well as patients for her sweet nature. She is a devotee of Mother Vailankanni. When things get out of control, Mary advises the patients to visit the Vailankanni Shrine, which is known for its miracles. The film also shows the three miracles which took place when Mother Vailankanni appeared to people: a little boy selling milk, a lame boy, and Portuguese sailors who were saved from a storm; and how people became devotees of Mother Vailankanni.