The Frenchman's Son.

A young boy and his two grandmothers flee from headhunters and other villainous types in the Brazilian rain forest in this wacky family adventure. Benjamin, whose mom is dead and whose dad is off in the jungle searching for gold, is more cool-headed than his two grandmothers, both of whom hate one another. Upper class teacher bristles at the coarse behavior of working class Suzanne, who shoplifts and cheats at cards. Soon bad guys threaten them, and the chase begins.