Set during the period of growing influence of the Indian independence movement in the British Raj, the story begins with the arrival in India of a British woman, Miss Adela Quested, who is joining her fiancé, a city magistrate named Ronny Heaslop. She and Ronny's mother, Mrs. Moore, befriend an Indian doctor, Aziz H. Ahmed.
The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.
The British governor of a tiny island nation in the Caribbean Commonwealth finds his idyllic existence thrown into chaos when an American drilling company finds a huge source of natural mineral water there.
