Is there another story that I am not aware of that has a similar premise? I don't want to copy anyone else's idea.
Nah, I think you're fine.
It sounds a tiny little bit like something in one of my stories -- Lois & Clark's son seeks a meeting with Superman and asks himself whether there is any way of getting to see him without having to ask his parents to help.
But like I said, I think you're fine. No worries.
...and you have the beginnings of a very interesting story. I'm looking forward to the rest of it!