Tintin intrepid reporter, along with his loyal dog, Snowy, are thrust into a world of high adventure when they detect that a boat carrying an explosive secret. Ivan Ivanovitch Sakharine suspects him of stealing a priceless treasure, Since Tintin is attracted to some mystery that is centuries-old. Tintin and Snowy, with the assistance of salty, cantankerous Captain Haddock and bumbling detectives, Thompson and Thomson, traveling half the entire world, one step ahead of their opponents, as Tintin endeavors to find the Unicorn, a sunken ship that may hold a vast fortune, but in addition a historical curse.