Two fishermen are kidnapped by the dictator of an undersea civilization who plans to conquer the surface world.; An evil creature, imprisoned in a candle long ago by a wizard, threatens to break free and cause great destruction.; The Great Mardo, a washed-up magician, uses sleight-of-hand to convince two alien scouts that Earth will be too difficult to conquer.; A writer exploring ghost towns of the West receives a telegraph message from another dimension, telling of an alien invasion that was foiled years earlier.