Deti Kapitana Granta on AllMovie

Captain Grant's Children is a Russian filmization of a lesser-known Jules Verne novel. Two spunky kids go on an around-the-world search for their missing father. They team up with a charming reprobate, who leads them through several hair-raising (albeit low-cost) adventures. When they finally locate their father, they have to contend with a duplicitous rival and a volcano. You might be more familiar with In Search of the Castaways, the 1963 Disney remake of Captain Grant's Children.