unexpected (adjective)

1. In Greek mythology, Persephone's abduction by Hades was an unexpected event for her and her mother Demeter.

2. In the fantasy novel, the protagonist discovers an unexpected power that changes the course of their journey.

3. The horror movie had many unexpected twists and turns that kept the audience on the edge of their seats.

4. The anime series had an unexpected plot twist in which the villain turned out to be the protagonist's long-lost sibling.