The gang travel to China making their way to the city of Rampoo. While there, the gang run into the Moon Monster, whose shadow, legend says, turns people into stone.

The gang visit their friend, Antonio, in Venice, Italy, and find that he's haunted by the spirit of an ancestor, the Ghostly Gondolier, who seeks to steal the ancient necklace Antonio wears.

The gang head to Puerto Rico for a holiday. They visit an ancient fortress where the ghost of General Juan Carlos, who guards the El Moro Fortress, warns them to stay away.