Mysterious creatures that have landed on the ground in a flying saucer, encouraging the people they meet to undergo experimental research in exchange for gaining youth and immortality.
| Directing | Janusz Kubik | Director |
| Writing | Czeslaw Chruszczewski | Short Story |
| Writing | Janusz Kubik | Screenplay |
| Camera | Bogusław Lambach | Director of Photography |
| Camera | Wiesław Pyda | Assistant Camera |
| Art | Jerzy Groszang | Production Design |
| Sound | Włodzimierz Kotoński | Music |
| Sound | Jan Radlicz | Sound |
| Editing | Maria Mastalinska | Editor |
| Production | Ignacy Goncerz | Production Manager |
