When Tintin learns that his friend, Chang (from "The Blue Lotus") was in a plane crash in the Himalayas. Tintin, Snowy, and Captain Haddock go on the dangerous and somewhat impossible journey to find him.
When cars start exploding in their home country and it leads to a soon-to-be serious oil crisis. Tintin, along with Thompson and Thomson travel to the Middle East to get to the bottom of the situation.