The book is a thrilling account of a daring and adventurous expedition across the Pacific Ocean on a balsa wood raft named Kon-Tiki. The journey, led by a Norwegian explorer, is an attempt to prove that South Americans could have settled Polynesia in pre-Columbian times. The narrative is filled with descriptions of dangerous encounters with marine life, harsh weather conditions, and the challenges of surviving on the open sea. The expedition's success provides compelling evidence in support of the author's theory.

This story follows a young Polynesian boy named Mafatu, who has been terrified of the sea ever since witnessing his mother's death in a storm. Dubbed a coward by his peers, Mafatu decides to conquer his fears. He embarks on a daring solo journey into the Pacific, facing harsh elements, battling wild animals, and ultimately proving his bravery. Through his adventures on a deserted island, Mafatu demonstrates remarkable survival skills, crafts tools, and makes a canoe, readying himself for the return home. His journey transforms him from a scared boy into a confident young man, earning him the respect of his community and the title of a true hero.

This book is a captivating real-life adventure story about a Norwegian explorer and his crew who set out on a daring voyage across the Pacific Ocean on a balsa wood raft. The journey, undertaken to prove a controversial anthropological theory about the settlement of Polynesian islands, is filled with danger, excitement, and discovery. The author's vivid descriptions of the perilous journey, the magnificent sea life they encounter, and the ultimate success of their expedition make this a thrilling and inspiring read.