Two lads, Teddy Wright and Neal Emery, embark on the steam yacht Day Dream for a cruise to the tropics. The yacht is destroyed by fire, and then the boat is cast upon the coast of Yucatan. They hear of the wonderful Silver City, of the Chan Santa Cruz Indians, and with the help of a faithful Indian ally carry off a number of the golden images from the temples. Pursued with relentless vigor at last their escape is effected in an astonishing manner. The story is so full of exciting incidents that the reader is quite carried away with the novelty and realism of the narrative.