In this story a mongoose named Rikki Tikki Tavi was washed away from his home during a flood. He ended up in the garden of Teddy and his family. The family took Rikki in and he became their protector and pet.
Rikki Tikki meets two cobras named Nag and Nagaina. Nag and Nagaina come up with a plan to kill the family. Rikki knows he has to take care of them. Rikki finds Nag in the bathroom. He then grabs a hold tightly to the back of Nag's head to kill him.
When Nagaina finds out about her husband's death she rages. Rikki knew she would be furious so he finds her nest and destroys all of her eggs but one. Little does he know Nagaina has the family cornered at the dinner table.
When Rikki finds out about Nagaina he uses her last egg to bargain her away from the family. Nagaina grabs her egg and rushes out the door.
Nagaina hides in a hole but Rikki is right behind her. She slithers through the tunnel but Rikki catches her. He pulls her closer in a killing position. She has no where to go.
Rikki crawls out of the hole in time to tell everyone Nagaina is dead. You won't have to worry any longer.