Robinson Kreutznaer (German father, English mother) leaves his middle-class family to travel around the world. First voyage: Guinea. Second one: captured by Moorish pirates and rescued by a Portuguese ship that brings him to Brazil, from where he sets out on a voyage to Africa to get more slaves for his plantation. During the journey he is shipwrecked on a desert island and remains there for 28 years. There, he gradually re-builds a society. In his diary he records his experiences and debates ideas about himself, the reader and God. After 12 years, he finds a human footprint and some human bones and flesh left by cannibals. He tries to attack them, but they escape and leave a captive, whom he calls Friday (after the day of his rescue). Robinson and Friday attack other cannibals landed on the island and free 2 prisoners, one of whom turns out to be Friday's father. At the end, Robinson returns to England and discovers that his plantation in Brazil made him rich.