The term SCI-FI THREAT is often used to refer to a potential danger or menace in science fiction stories. The crossword solution for this term is ALIENS, which refers to extraterrestrial beings that are often portrayed as a threat in sci-fi stories. ALIENS are often depicted as hostile and dangerous creatures that can cause destruction and chaos. They are also often seen as a source of mystery and intrigue, as their motivations and intentions are often unknown.