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.