Frank Atwell can't sleep because he has nightmares in which a monster tries to catch him. His doctor sedates him and he sleeps so heavily that the monster catches him before he can wake up. He discovers his dream world is the real world, and he is its king, while the mundane world was a dream, or was it?; Robert Saunders wants to build a sub-oceanic tunnel from North America to Europe. He discovers a gentle underground civilization and he destroys the tunnel to protect them from the upper world.; A gangster tries to escape the police by forcing an old man to take him to another state. The old man turns out to be from the future and is looking for a male specimen to put on display.; The Clock-Maker cannot stand anything that's not perfect. When his bookkeeper makes a mistake it sounds like he has killed him. The local police arrive to discover the bookkeeper was a clockwork man and the Clock-Maker was repairing him.