Once upon a time a mongoose named Rikki-Tikki-Tavi washes up in a flood. Teddy finds poor Rikki-Tikki-Tavi, Teddy gets his father and he asks his if they should bury him. Teddy's dad knows that Rikki-Tikki-Tavi is alive. Teddy's dad brings Rikki-Tikki-Tavi into their home.
Rikki-Tikki-Tavi meets Nag, and Nagaina. While Nag distracts him, Nagiana tries to sneak up on Rikki-Tikki-Tavi and attack him from behind. Then he dodges the deathly blow by jumping. Rikki-Tikki-Tavi bit her in the back. Then Nigaina and Nag stormed off.
Rikki-Tikki-Tavi kills Karait by biting him in the spine. Karait was going to kill Teddy so Rikki-Tikki-Tavi saves Teddy. Teddy's father comes out of the house with a stick to make sure Karait, the deadly snake was dead. Teddy's parents were very happy that Rikki-Tikki-Tavi killed the snake.
Nag and Nagaina plot to kill Teddy and his parents. Nagaina was talking about the eggs she had in the garden.So Rikki-Tikki-Tavi would leave the house and garden. Nag goes up the pipe. Rikki-Tikki-Tavi was listening through the pipe in the bathroom.
Rikki-Tikki-Tavi jumps from the top of the bath tub and digs his fangs into Nag's neck. Nag is whipping back and forth trying to get Rikki-Tikki-Tavi off of him. By the time Teddy's father comes Nag is dead. Even though Nag was dead, Teddy's dad shot Nag.
While Darzee is distracting Nagaina from crying over Nag's body Rikki-Tikki-Tavi makes his way down to the end of the garden to break the eggs. When Rikki-Tikki-Tavi gets to the snake eggs he starts to crush them. There was one of the eggs left he did not crush, when he sees Nagaina going in the dining room.