As a teenager, what you want more than anything is to be truly independent. What you have yet to learn is that no-one really has the kind of independence you want.
That wouldn't be a problem, except that something very strange is happening to you when you sleep. You're not sure you can trust your closest friends enough to tell them, let alone any adults.
You have to do something, though, because the situation is getting steadily worse. You can't face it on your own. You're going to have to sacrifice a little of your independence so your friends can help you, if they can. After all, the same thing is happening to them.