Alright, So i’ll give you all i can remember from the movie.
This actor gets abducted and brought to help a group of aliens defeat an evil overlord. It is only 1 actor, not a group. the aliens have been at war for a while and they don’t understand the concept of an actor and when it gets brought up the closest thing they have to the concept is a spy.
The evil overlord has this psychic seer who’s power relies on her being a virgin, naturally her and the actor get together and she looses her ability to see the future but needs to pretend she still has it.
I’ve been trying and trying to find the title of this movie for a good while.