In this story a mongoose named Rikki-tikki-tavi was washed from his home during a horrible rain storm in India. The mongoose ended up on the garden path of Teddy and his family. The family decides to bring Rikki-Tikki-Tavi into their house in order to warm him up.
As the story went on, Rikki met a Cobra that had eaten some eggs that had fallen from Darzee's, a bird, nest. Rikki knew that he had to stop this snake.
Later on in the story, Rikki-tikki-tavi finds out that Nag and Nagaina plan to kill Teddy and his family
As the story continues, Rikki-tikki finds out that Nagaina has hidden her eggs in the mellon bed closest to the wall, and then plans to kill every one of them but one.
Rikki then finds out that Nagaina has the family cornered then he grabs the egg and heads for the family.
Rikki-tikki chased Nagaina into her hole. After hours of Rikki-tikki being in Nagainas hole he comes out and states that he has killed Nagaina.