Virat and Latha named their son Ashish, for he is the light and glory of their world. Yet a simple drink of water from the wrong cup changes them forever. Virat, Latha, and Ashish are Untouchables in 1905 India, members of a caste who must never contaminate the world of the other, higher, castes. When Ashish is in desperate need of a doctor, Virat risks everything to save his son and ventures into the dangerous realm of the high caste. There, the strength of a father's love, the power of a young British nurse, and the faith of a child change the lives around them.