Explorers meet a witch doctor named Bombu, who seems to possess real power. He is killed by lightning and when they find that his mask is really his face they realize that he was an alien.; Against expert opinion, an engineer digs a mine to the center of the Earth and finds dragons. He collapses the mine himself to allow his workers to escape. They say that the mine collapsed as a warning to avoid panic, and silently remember the engineer's heroism.; A man messes with his TV and it picks up a battle between alien-looking creatures. The man assumes that he must have tuned into the events upon some other planet, but what the TV has actually shown him was a colony of black ants being attacked and destroyed by a colony of red ants right outside his window.; A man is telepathically controlled by a hostile Martian who returns to Earth with him. He returns to Earth and places his mind in the man's body, but he is able to trick the alien into immediately attacking armed guards and being killed.