Jack Haniken, a young aristocrat and collector, and Elizabeth, his friend, got into dangerous trouble and amazingly remained alive. By fortune Jack has faithful friends - charming Natasha and sage professor Thompson, who are always ready come to the rescue. Jack suddenly disappeared. Trying to find him Natasha and the professor learned about old sunken treasure that Jack gone to search, and hurried to save him. Unfortunately, a gang of bandits headed by Herman Grubber found out about the friends' plan. Now they have to solve many puzzles and riddles to find the ways out of bizarre situations, and return alive.