Mario and Ana, in voluntary exile from Buenos Aires, live in a remote Argentine valley with their 12-year-old son Ernesto. Mario runs a school and a wool cooperative; Ana, a doctor, heads a clinic with Nelda, a progressive nun. Into this idealistic family comes Hans, a jaded Spanish geological engineer -- surveying the land for the local patron, to see if it can be dammed for hydro-electric power, which would drive the peasants from the land into the cities.

Based on the journals of Che Guevara, leader of the Cuban Revolution. In his memoirs, Guevara recounts adventures he and best friend Alberto Granado had while crossing South America by motorcycle in the early 1950s.

Selkirk, an unruly, selfish pirate, is the sailing master of the Esperanza, an English galley sailing the South Seas in search of treasures. When Captain Bullock decides to abandon him on an uninhabited island, he discovers a new outlook on the world and learns to survive alone, becoming the real Robinson Crusoe.