Pi narrates from adulthood looking back at his earlier life as a high school and college student in Toronto, then even further back to his childhood in Pondicherry. He explains that he has suffered intensely and found peace and relief in religion and zoology. Pi is named after the Piscine Molitor, a Parisian swimming club with two pools that Adirubasamy used to frequent. We learn that Pi’s father once ran the Pondicherry Zoo, teaching Pi and his brother, Ravi, about the dangerous nature of animals by feeding a live goat to a tiger before their young eyes. Pi, brought up as a Hindu, discovers Christianity, then Islam, choosing to practice all three religions at the same time. Motivated by India’s political strife, Pi’s parents decide to move the family to Canada , they set sail in a cargo ship, along with a crew and many cages full of zoo creatures.
At the beginning of Part Two, the ship is beginning to sink. Pi clings to a lifeboat and encourages a tiger, Richard Parker, to join him. Then, realizing his mistake in bringing a wild animal aboard, Pi leaps into the ocean. Pi describes the explosive noise and chaos of the sinking: crewmembers throw him into a lifeboat, where he soon finds himself alone with a zebra, an orangutan, and a hyena, all seemingly in shock. His family is gone. The storm went away and Pi thought over and over his difficult situation. The hyena kills the zebra and the orangutan, and then—to Pi’s intense surprise—Richard Parker reveals himself: the tiger has been in the bottom of the lifeboat all along. Soon the tiger kills the hyena, and Pi and Richard Parker are alone together at sea. Pi survived on canned water and filtered seawater, emergency rations, and freshly caught sea life for a long time. He also provides for the tiger, whom he masters and trains.
During an outbreak of temporary blindness brought on by dehydration, Pi has a run-in with another blind castaway. The two discuss food . When the blind man attacks Pi, intending to eat him, Richard Parker kills him. Not long after, the boat pulls up to a strange island of trees that grow directly out of vegetation, without any soil. Pi and Richard Parker stay here for a time, sleeping in their boat and exploring the island during the day. Pi discovers a huge colony of meerkats who sleep in the trees and freshwater ponds. One day, Pi finds human teeth in a tree’s fruit and comes to the conclusion that the island eats people. He and Richard Parker head back out to sea, finally washing ashore on a Mexican beach. Richard Parker runs off, and villagers take Pi to a hospital.
In Part Three, two officials from the Japanese Ministry of Transport interview Pi about his time at sea, hoping to shed light on the fate of the doomed ship. Pi tells the story as above, but it does not fully satisfy the skeptical men. So he tells it again, this time replacing the animals with humans: a ravenous cook instead of a hyena, a sailor instead of a zebra, and his mother instead of the orangutan. The officials note that the two stories match and that the second is far likelier. In their final report, they commend Pi for living so long with an adult tiger.