After an honest(ish), hard(ly)-working fae is unjustly accused of a crime they can’t possibly have proof of him committing, he’s coerced into serving as a border guard, policing fae activity on Earth and keeping the natives from knowing they’re real.
It’s not as though he was illegally visiting Earth to see his predecessor murdered by some creature, so he obviously has no reason to worry.
Apart from the human military unit hunting for proof of fae.
And an invasive story that has Earth in its sights.