Tony and Doug are transported to Krakatoa, a volcanic island between Java and Sumatra in great activity, and the blowup seems to be imminent. The travelers in time are attacked by superstitious natives who believe that a sacrifice would appease the fire.

Cast: James Darren, Robert Colbert, Torin Thatcher, Ellen Burstyn, Victor Lundin, Whit Bissell, John Zaremba, Lee Meriwether, Sam Groom, George Matsui