A man believes that he has discovered an alien invasion, but he is the real alien, and has amnesia.; A paranoid man seals himself in a bomb shelter, but instead of a war, he misses the discovery of immortality in space and the exodus of humanity.; A thief tries to use a time machine to escape, but creates a paradox when he kills the machine's inventor in the past; An alien space ship lands on Earth for the first time and their frightening appearance causes apprehension among the human crowd. Their language is indecipherable, their gestures appear menacing, and the panicked human crowd suggests possible violent responses. A small child with a toy rocket is fascinated by the visitors and walks up from the crowd to the space ship hatch, where an alien child appears with a toy and the two children exchange toys, being free of the prejudices which cause adults to fear the unknown.; A woman accused of witchcraft is exonerated, but discovers that her fiancé really is a witch.