The story follows the experiences of a mongoose named Rikki-Tikki-Tavi after he becomes the pet of an English family residing in India. He becomes friendly with some of the other creatures inhabiting the garden and is warned of the cobras Nag and Nagaina, who are angered by the human family's presence in their territory. Accordingly, Nag enters the house's bathroom before dawn to kill the humans and make Rikki leave, so that their babies will grow...