On a journey to San Francisco, Richard, his father and cousin Emmeline find themselves on a ship about to explode. Rushed to a lifeboat with Paddy Button, the two children escape while their father (and uncle) are on another lifeboat. In the chaos following, the lifeboats are separated. Paddy, Richard and Emmeline find themselves with no food and no water stuck in the middle of nowhere. After some time, the three come across an uncharted paradise, where Paddy quickly teaches the children fishing, hunting and building. After maybe a month or two, Paddy gets very drunk off a barrel of rum found on the island when they first arrive, and drowns in the middle of the night. Emmeline and Richard, now alone and very scared, move location and rebuild their island home. Many years later, the two young teenagers have developed a very real home, but hormones and feelings between the two strain their friendship...

A family in route to New Guinea is shipwrecked on a deserted tropical island. They are forced to remain on the island because of the damage to the ship and the pirates that are roaming the islands. They create a home on the island (centering around a huge tree house) and explore the island and its wildlife. Plenty of adventure ensues as the family deals with issues of survival and pirates, and the brothers must learn how to live on the island with an uncertain future.