>>3192573Witches v. Aliens is a real thing.
>https://en.wikipedia.org/wiki/Magic_User%27s_ClubAlien spacecraft destroys the world's armed forces -- being careful not to harm any humans.
Thereafter, its robot-probes study humanity, but don't cause any trouble. They even wait for green lights before floating across streets with pedestrians.
However, some high school students obsessed with magic (in a world, like ours, which doesn't believe in the supernatural) is determined to repel the invaders.