During the Civil War five survivors escape from a prison camp in Richmond, Virginia by hot air balloon and find themselves on an uncharted island in the Pacific. Far from any kind of known civilization, the island is inhabited with carnivorous monsters, bloodthirsty pirates, and mad genius Captain Nemo, who lives on the island for his own secretive ends.

Five prisoners of war escape captivity in a Confederate prison camp only to land in an uncharted Pacific island where time stands still and dastardly pirates don't take kindly to strangers in director Russell Mulcahy's screen adaptation of fantasy author Jules Verne's literary classic. They thought they were on their way to freedom when they leapt into a balloon and took to the skies, but upon landing on an island where nothing is as it seems, these escapees are about to embark on the adventure of a lifetime. From bloodthirsty beasts to murderous pirates and a mad genius named Captain Nemo (Patrick Stewart), treachery lurks behind every corner on this island, and if these five survivors have any hope of staying alive, they'll have to fight to their dying breaths to escape the island and get back to the modern world.

About a boy, Charlie Spinner, who discovers that his grandfather, Oscar Spinner, is actually a secret agent. He acts senile but it is just a cover so that nobody would notice. After Charlie confronts Oscar with this they work together on a dangerous assignment.