Tintin, Captain Haddock and Professor Calculus are on their way to Sydney for an international conference on space exploration. While their flight makes a refueling stop in Jakarta's Kemayoran Airport, they unexpectedly meet their old friend, Piotr Skut, who is now the chief pilot for eccentric millionaire Laszlo Carreidas. Unable to politely refuse Carreidas's offer of riding in his prototype private jet, Tintin and his friends join the millionaire on the way to Sydney. But unbeknownst to Carreidas and the others, Spalding and two of the pilots have been recruited to hijack the plane and bring it to a deserted volcanic island called Pulau-Pulau Bompa in the Lesser Sunda Islands....
