After a meteor-like object lands in the woods, poachers unearth a cave filled with alien eggs. As they attempt to destroy the eggs, one of them is killed by an unseen creature, leaving one egg intact. A young boy named Tommy finds the remaining egg and brings it home to hatch. As more murders occur around town, Tommy learns that his new pet alien, who he names Trumpy, possesses telekinetic powers.
You can now watch Extraterrestrial Visitors online on the following streaming providers in the United States.
| Directing | Juan Piquer Simón | Director |
| Crew | Basilio Cortijo | Special Effects |
| Writing | Joaquín Grau | Writer |
| Editing | Antonio Gimeno | Editor |
| Production | Dick Randall | Executive Producer |
| Production | Edward L. Montoro | Executive Producer |
| Writing | Juan Piquer Simón | Writer |
| Visual Effects | Juan Piquer Simón | Visual Effects |
